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# Beteccad

## Sitemaps
[XML Sitemap](https://beteccad.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Benefits of Installing Smoke Dampers in HVAC Systems](https://beteccad.com/benefits-of-installing-smoke-dampers-in-hvac-systems-2/): Fire statistics show that smoke inhalation causes more fire-related deaths than the flames themselves, with an estimated 50% to 80% of fire fatalities linked to smoke inhalation rather than burns. This is why smoke dampers are so important: they help contain smoke, protect escape routes, and support safer evacuation while preserving the performance of the HVAC system during an emergency.
- [Benefits of Installing Smoke Dampers in HVAC Systems](https://beteccad.com/benefits-of-installing-smoke-dampers-in-hvac-systems/): Fire statistics show that smoke inhalation causes more fire-related deaths than the flames themselves, with an estimated 50% to 80% of fire fatalities linked to smoke inhalation rather than burns. This is why smoke dampers are so important: they help contain smoke, protect escape routes, and support safer evacuation while preserving the performance of the HVAC system during an emergency.
- [What Is a Smoke Damper and How Does It Work?](https://beteccad.com/what-is-a-smoke-damper-and-how-does-it-work-2/): Fire safety encompasses much more than extinguishing flames. Smoke, in many circumstances, spreads more rapidly than fire itself. Smoke, therefore, is typically a larger emergency threat. HVAC systems, therefore, incorporate features that assist in controlling the spread of smoke as well as the protection of egress routes. Among these components is the smoke damper. Smoke dampers are particularly advantageous as they remain in an inactive state until they are absolutely necessary. 
- [What Is a Smoke Damper and How Does It Work?](https://beteccad.com/what-is-a-smoke-damper-and-how-does-it-work/): Fire safety encompasses much more than extinguishing flames. Smoke, in many circumstances, spreads more rapidly than fire itself. Smoke, therefore, is typically a larger emergency threat. HVAC systems, therefore, incorporate features that assist in controlling the spread of smoke as well as the protection of egress routes. Among these components is a smoke damper. Smoke dampers are particularly advantageous as they remain in an inactive state until they are absolutely necessary. 
- [What Are Duct Heaters and Why Are They Important in HVAC Systems?](https://beteccad.com/what-are-duct-heaters-in-hvac-systems/): A comfortable indoor environment is not solely about cooling, it is about maintaining thermal comfort year-round. In commercial and industrial buildings, maintaining the correct supply air temperature throughout all seasons requires the integration of heating and ventilation systems. Duct heaters are a critical component of these systems, typically installed within the air handling unit (AHU) ductwork where they are not directly visible. They play a fundamental role in delivering conditioned, thermally comfortable air to occupied spaces.
- [Applications and Benefits of Pressure Relief Dampers in HVAC Systems](https://beteccad.com/applications-benefits-pressure-relief-dampers-hvac/): Pressure relief dampers are very important in this. They help keep everything working. Even though people often do not notice them, these dampers are necessary for the HVAC system to work well. They help it work safely and efficiently. Let's talk about where these dampers are used and why they are important for modern HVAC systems.
- [Why VAV Technology Is Essential for Modern Building Automation](https://beteccad.com/why-vav-technology-building-automation/): With traditional systems, they supply air all the time to all the rooms. But VAV technology changes whenever each room needs changes and not all the time.
- [Advantages of Acoustic Louvers in Noise-Sensitive Environments](https://beteccad.com/advantages-acoustic-louvers-quiet-buildings/): You know how when you turn on the AC or the heater, there’s a noise that comes from it? Have you ever heard that kind of a noise in commercial buildings?  You might not have heard of it because it can disrupt the productivity, customer comfort, communication and even compliance with local noise regulations. That is because of something called acoustic louvers. These are made to reduce noise while allowing proper airflow. They have become an essential part of HVAC systems.
- [Why ATEX Rated Dampers Are Critical in Explosive Environments ](https://beteccad.com/atex-rated-dampers-critical-in-explosive-environment/): ATEX rated dampers are one of those components people tend to overlook until something goes wrong. If your ventilation system isn’t designed to handle explosive conditions, it becomes part of the problem. This blog will tell you why these dampers are critical and where they actually make a difference. 
- [Control Damper Blade Operation and Their Applications](https://beteccad.com/control-damper-blade-operation-applications/): Airflow control sounds simple until it isn’t. Behind every efficient HVAC system, there’s a set of components quietly doing precision work and control damper blades sit right at the centre of it. They regulate, balance and direct airflow in ways most people never notice but systems can’t function without them.
- [What Is a Fire Damper and Why It’s Critical for Building Safety](https://beteccad.com/fire-damper-building-safety/): When there’s a fire in a building, you never know where and how it is going to spread. Fire moves fire through various ducts and can turn into a major disaster. That’s exactly why you need fire dampers in your building. In this blog, you will read about what fire dampers are and how they help you during fires.
- [Routine Maintenance Checklist for Dampers & Air Control Devices That Prevent Costly HVAC Failures](https://beteccad.com/hvac-dampers-air-control-maintenance-checklist/): Many HVAC systems fail silently, dampers stick, air control devices clog, airflow becomes uneven. Yet everything looks “fine” from outside, many facility managers ignore small warning signs until energy bills spike or comfort complaints flood in.
- [How Important is R&D in HVAC Safety Products](https://beteccad.com/how-important-is-rd-in-hvac-safety-products/): Buildings in today’s world demand more than cooling and ventilation. They demand safety, durability, and compliance. If you manage commercial spaces, factories, hospitals, or high rise buildings, you already know that one weak HVAC safety component can create serious risk.
- [What is The Future of Life Safety HVAC](https://beteccad.com/what-is-the-future-of-life-safety-hvac/): Present- day buildings depend on HVAC systems not just for comfort but for life safety. Yet, many facilities still use outdated dampers and diffusers that fail during emergencies, risking both safety and energy efficiency.
- [Guide to HVAC Dampers: Types, Uses & Performance Standards](https://beteccad.com/hvac-dampers-types-uses-performance-standards-guide/): If you work on HVAC projects, you already know that airflow control is critical. A system may look perfect on paper, but without the right HVAC dampers, diffusers, and grilles, performance drops fast. Uneven cooling, noise, and failed inspections are common warning signs.
- [Guide to HVAC Dampers: Types, Uses & Performance Standards](https://beteccad.com/guide-to-hvac-dampers-types-uses-standards/): If you work on HVAC projects, you already know that airflow control is critical. A system may look perfect on paper, but without the right HVAC dampers, diffusers, and grilles, performance drops fast. Uneven cooling, noise, and failed inspections are common warning signs.
- [The Future of Indoor Air Quality in a Post-Pandemic World](https://beteccad.com/future-of-indoor-air-quality-post-pandemic/): Indoor air quality was once invisible. People noticed it only when something went wrong. The pandemic changed that forever. Today, clean indoor air feels as essential as clean water. Offices, hospitals, tunnels, airports, and industrial spaces can no longer afford to ignore what people breathe every day.
- [Top Reasons Ventilation Needs AMCA Certification Now](https://beteccad.com/top-reasons-ventilation-needs-amca-certification-now/): If you work with ventilation systems, you already know this truth: performance on paper means nothing if it fails on site. Airflow drops, pressure leaks, noise complaints rise, and safety audits become a nightmare. In today’s high-risk environments, tunnels, metros, industrial plants, ventilation cannot afford uncertainty.And this is where AMCA Certification of Ventilation Systems cannot be ignored. It eliminates doubt, substantiates performance, and safeguards people and projects. You do not rely upon promises; you rely upon proven information. In this blog, let's uncover what makes AMCA certification relevant today, how it makes a difference to safety, regulatory requirements, and trust, and what makes AMCA certification smart and future-ready.
- [Industrial vs. Commercial HVAC Requirements: Key Differences Explained](https://beteccad.com/industrial-vs-commercial-hvac-key-differences/): Choosing between industrial HVAC systems and commercial HVAC systems is a very crucial decision affecting safety, efficiency, compliance, and consequently long-term operational costs. HVAC requirements are very often treated alike across facilities, but the reality is very different once application, load, and risk factors are taken into account.
- [Guide to Variable Air Volume (VAV) Terminals for Modern HVAC Systems](https://beteccad.com/guide-variable-air-volume-vav-terminals-hvac-systems/): Modern buildings deal with high energy costs and uneven room comfort. Variable Air Volume (VAV) terminals fix this by adjusting air flow to match real needs, cutting waste in HVAC systems. Fixed air systems waste energy cooling empty rooms while busy areas stay too warm, VAV technology brings smart control that saves money.​
- [Top Industries Using HVAC Systems: Where Efficiency Meets Safety](https://beteccad.com/top-industries-using-hvac-systems-efficiency-meets-safety/): In this blog, let’s explore the top industries utilizing HVAC systems, tunnels, airports, hospitals, marine environments, and metro systems. You will also learn how HVAC protects air quality, improves energy efficiency, and supports emergency response.
- [Do Blast Dampers Really Save Lives? Full Breakdown Here](https://beteccad.com/do-blast-dampers-really-save-lives-full-breakdown/): When we talk about industrial safety, worker security, and disaster preparedness, one device often sits at the center of discussion, the blast damper. But a common question remains: Do blast dampers really save lives? The short answer is yes, they do and the long answer is what we’ll uncover in this complete breakdown.
- [Why BETEC CAD Tops Life Safety Solutions Every Time](https://beteccad.com/why-betec-cad-tops-life-safety-solutions-every-time/): Across modern buildings, life safety is the one area where nobody can afford mistakes. Whether it’s a hospital, airport, metro station, data center, or commercial tower, the entire safety system depends on how well the structure can control fire, smoke, pressure, and airflow. This is why people across engineering and construction communities often ask, “Which brand offers the best life safety solutions?” The consistent answer is BETEC CAD.
- [Shocking Truth: 5 Reasons Life Safety Dampers Are Your Building’s Last Defense](https://beteccad.com/5-reasons-life-safety-dampers-are-your-buildings-last-defense/): When we think about fire safety in buildings, sprinklers, fire alarms, and extinguishers usually come to mind. Yet one of the most crucial safety devices often goes unnoticed, life safety dampers. These devices quietly protect lives by controlling the spread of fire, smoke, and even hazardous blasts. Understanding their role can make the difference between a small fire incident and a major disaster.
- [Fire Dampers vs Blast Dampers: What’s the Critical Difference?](https://beteccad.com/fire-vs-blast-dampers-differences/): The HVAC system, the complex network that distributes air throughout modern buildings, is a critical component of comfort, but also a potential conduit for danger. This is why specialized safety components like fire safety dampers and blast dampers protection devices are fundamental to passive safety systems. Selecting the right damper is not simply an engineering task; it is a profound choice that dictates the level of life safety and structural resilience in the face of catastrophic events.

## Pages
- [Data Centers](https://beteccad.com/data-centers/): Motorized Smoke and Fire Damper View Product Motorized Control Damper View Product Back Draft Damper View Product Pressure Relief Damper View Product
- [Airport](https://beteccad.com/airport/): Motorized Smoke and Fire Damper View Product Fire Damper View Product Motorized Smoke Damper View Product Fire Damper View Product
- [Metro](https://beteccad.com/metro/): Tunnel Ventilation Damper View Product Motorized Smoke and Fire Damper View Product Motorized Control Damper View Product Pressure Relief Damper View Product Back Draft Damper View Product Louvers View Product Diffusers View Product
- [Marine](https://beteccad.com/marine/): Air outlets View Product Louvers View Product Gas Tight Dampers View Product Commercial control dampers View Product Life Safety dampers View Product
- [Residential / Commercial](https://beteccad.com/residential-commercial/): Air outlets View Product Louvers View Product Gas Tight Dampers View Product Commercial control dampers View Product Life Safety dampers View Product Fire rated doors View Product Filters View Product Variable air volume terminals View Product
- [Nuclear](https://beteccad.com/nuclear/): Air outlets View Product Louvers View Product Gas Tight Dampers View Product Commercial control dampers View Product Life Safety dampers View Product Fire rated doors View Product
- [Oil and Gas](https://beteccad.com/oil-and-gas/): Air outlets View Product Louvers View Product Gas Tight Dampers View Product Commercial control dampers View Product Life Safety dampers View Product Fire rated doors View Product Filters View Product
- [Tunnel Industrial](https://beteccad.com/tunnel-industrial/): Tunnel Ventilation Dampers View Product Life safety dampers View Product Louvers View Product Acoustic Control View Product
- [Photo Gallery](https://beteccad.com/photo-gallery/): Photo Gallery
- [Nigeria](https://beteccad.com/nigeria/): Nigeria
- [Srilanka](https://beteccad.com/srilanka/): Sri Lanka
- [Algeria](https://beteccad.com/algeria/): Algeria
- [Pakistan](https://beteccad.com/pakistan/): Pakistan
- [USA](https://beteccad.com/usa/): USA
- [India](https://beteccad.com/india/): India
- [Bahrain](https://beteccad.com/bahrain/): Bahrain
- [Iraq](https://beteccad.com/iraq/): Iraq
- [Hong Kong](https://beteccad.com/hong-kong/): Hong kong
- [Singapore](https://beteccad.com/singapore/): Singapore
- [South Korea](https://beteccad.com/south-korea/): South Korea
- [Turkey](https://beteccad.com/turkey/): Turkey
- [Thailand](https://beteccad.com/thailand-2/): Thailand
- [Jordan](https://beteccad.com/jordan-2/): Jordan
- [Thailand](https://beteccad.com/thailand/): Thailand
- [Jordan](https://beteccad.com/jordan/): Jordan
- [Egypt](https://beteccad.com/egypt/): Egypt
- [Oman](https://beteccad.com/oman/): Oman
- [Kuwait](https://beteccad.com/kuwait/): Kuwait
- [KSA](https://beteccad.com/ksa/): KSA
- [Qatar](https://beteccad.com/qatar/): Qatar
- [UAE](https://beteccad.com/uae/): UAE
- [Laboratory](https://beteccad.com/laboratory/): IN-house Accredited UL555S Laboratory Betec Cad exemplifies its dedication to precise and dependable performance data through its state-of-the-art in-house elevated air flow performance testing laboratory (accredited as per UL555S standard). Our clients and their teams rely on us for comprehensive engineering and construction project support, backed by our capability to provide product testing and certification services. Some features of the testing laboratory include: 3000 fpm velocity 400 C temperature 5 in.wg. static pressure 555s compliance testing 500D airflow performance testing
- [Valves & Nozzles](https://beteccad.com/valves-nozzles/)
- [Grilles & Registers](https://beteccad.com/grilles-registers/)
- [Diffusers](https://beteccad.com/diffusers-products/)
- [Sand Trap Louvers](https://beteccad.com/sand-trap-louvers/)
- [Weather Louvers](https://beteccad.com/weather-louvers/)
- [Acoustic Panels](https://beteccad.com/acoustic-panels/)
- [Acoustic Louvers](https://beteccad.com/acoustic-louvers/)
- [Sound Attenuator](https://beteccad.com/sound-attenuator-2/)
- [Motorized Control Dampers](https://beteccad.com/motorized-control-dampers/)
- [Volume Control Dampers](https://beteccad.com/volume-control-dampers-2/)
- [Gas Tight Damper – Electric](https://beteccad.com/gas-tight-damper-electric/)
- [Tunnel Ventilation Dampers](https://beteccad.com/tunnel-ventilation-dampers-2/)
- [Gas Tight Dampers](https://beteccad.com/gas-tight-dampers/): Gas Tight Damper – Electric View Products Gas Tight Damper – Pneumatic View Products
- [Quadrant Fire Dampers – 3-HOUR](https://beteccad.com/quadrant-fire-dampers-3-hour/)
- [Quadrant Fire Dampers – 1.5-HOUR](https://beteccad.com/quadrant-fire-dampers-1-5-hour/)
- [Motorized Fire Dampers Dynamic – 3-HOUR](https://beteccad.com/motorized-fire-dampers-dynamic-3-hour/)
- [Motorized Fire Dampers – 3-HOUR](https://beteccad.com/motorized-fire-dampers-3-hour/)
- [Motorized Fire Dampers Dynamic – 1.5-HOUR](https://beteccad.com/motorized-fire-dampers-dynamic-1-5-hour/)
- [Motorized Fire Dampers Static – 1.5-HOUR](https://beteccad.com/motorized-fire-dampers-static-1-5-hour/)
- [Projects](https://beteccad.com/projects/)
- [Motorized Smoke/Fire Dampers – 3-HOUR](https://beteccad.com/motorized-smoke-fire-dampers-3-hour/)
- [Motorized Smoke/Fire Dampers – 1.5-HOUR](https://beteccad.com/motorized-smoke-fire-dampers-1-5-hour/)
- [Fire Door](https://beteccad.com/fire-door/): window.option_df_9685 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC15-Fire-Door.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Duct Heaters](https://beteccad.com/duct-heaters/): window.option_df_9678 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC14-Duct-Heaters.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Filters](https://beteccad.com/filters/): window.option_df_9668 = {"outline":,"autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC13-Filters.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Disc Value](https://beteccad.com/disc-value/): window.option_df_9657 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC12-Disc-Valve.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Diffusers](https://beteccad.com/diffusers/): window.option_df_9648 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC11.1-Diffuser.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Grilles](https://beteccad.com/grilles/): window.option_df_9639 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC11-Grills.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Access Doors](https://beteccad.com/access-doors-2/): window.option_df_9627 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC10-Access-Door.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Pressure Relief Dampers](https://beteccad.com/pressure-relief-dampers/): window.option_df_9620 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC09-Pressure-Relief-Dampers.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Sand Trap Louver](https://beteccad.com/sand-trap-louver/): window.option_df_9612 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC08-Sand-Trap-Louver.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Weather Louver](https://beteccad.com/weather-louver/): window.option_df_9602 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC07-Weather-louver.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Sound Attenuator](https://beteccad.com/sound-attenuator/): window.option_df_9591 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC05-Sound-Attenuator-AMCA.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Gas Tight Damper](https://beteccad.com/gas-tight-damper/): window.option_df_9580 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/4.3-BC4.3-Gas-Tight-Damper-U-Type-r2.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Tunnel Ventilation Dampers](https://beteccad.com/tunnel-ventilation-dampers/): window.option_df_9573 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC04.2-TVD-Tunnel-Ventilation-Damper.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [MSFD Class-II](https://beteccad.com/msfd-class-ii/): window.option_df_9561 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/4.0-BC04.0-MSFD-Class-II_compressed.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [MSFD Class-I](https://beteccad.com/msfd-class-i/): window.option_df_9551 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/4.1-BC04.1-MSFD-Class-I_compressed.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Fire Dampers UL 555](https://beteccad.com/fire-dampers-ul-555/): window.option_df_9534 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC03-Fire-Damper.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Motorized Control Damper](https://beteccad.com/motorized-control-damper/): window.option_df_9526 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC2.1-Motorized-Control-Damper-AMCA.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Volume Control Dampers](https://beteccad.com/volume-control-dampers/): window.option_df_9516 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC02-Volume-Control-Damper-AMCA.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Product Brochure](https://beteccad.com/product-brochure/): window.option_df_6994 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","duration":"1000","hard":"none","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","maxTextureSize":"1800","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/07\/Brochure-Betec-Cad-New-Feb-2025.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Fire Damper- 3 hours Dynamic](https://beteccad.com/fire-damper-3-hours-dynamic/)
- [Fire Damper – 3 hours Static](https://beteccad.com/fire-damper-3-hours-static/)
- [Fire Damper – 1.5 hours Dynamic](https://beteccad.com/fire-damper-1-5-hours-dynamic/)
- [Fire Damper – 1.5 hours Static](https://beteccad.com/fire-damper-1-5-hours-static/)
- [Quadrant Fire Dampers](https://beteccad.com/quadrant-fire-dampers/): Quadrant Fire Dampers - 1.5-HOUR View Products Quadrant Fire Dampers - 3-HOUR View Products
- [Motorized Fire Dampers](https://beteccad.com/motorized-fire-dampers/): Motorized Fire Dampers Static - 1.5-HOUR View Products Motorized Fire Dampers Dynamic - 1.5-HOUR View Products Motorized Fire Dampers - 3-HOUR View Products Motorized Fire Dampers Dynamic - 3-HOUR View Products
- [Motorized Smoke/Fire Dampers](https://beteccad.com/motorized-smoke-fire-dampers/): Motorized Smoke/Fire Dampers - 1.5-HOUR View Products Motorized Smoke/Fire Dampers - 3-HOUR View Products
- [Motorized Smoke Dampers](https://beteccad.com/motorized-smoke-dampers/)
- [Fire Dampers](https://beteccad.com/fire-dampers/): Fire Damper - 1.5 hours Static View Products Fire Damper - 1.5 hours Dynamic View Products Fire Damper - 3 hours Static View Products Fire Damper- 3 hours Dynamic View Products
- [Air Outlets](https://beteccad.com/air-outlets/): Diffusers View Products Grilles & Registers View Products Valves & Nozzles View Products
- [Fire Rated Doors](https://beteccad.com/fire-rated-doors/)
- [Access Doors](https://beteccad.com/access-doors/)
- [Louvers](https://beteccad.com/louvers/): Weather Louvers View Products Sand Trap Louvers View Products
- [Acoustic Control](https://beteccad.com/acoustic-control/): Sound Attenuator View Products Acoustic Louvers View Products Acoustic Panels View Products
- [Variable Air Volume Terminals](https://beteccad.com/variable-air-volume-terminals/)
- [Commercial Control Dampers](https://beteccad.com/commercial-control-dampers/): Volume Control Dampers View Products Motorized Control Dampers View Products Pressure Relief Damper Know More Counter Balancing Damper Know More Back Draft Damper Know More
- [Industrial dampers](https://beteccad.com/industrial-dampers/): Gas Tight Dampers View Products Tunnel Ventilation Dampers View Products
- [Life Safety Dampers](https://beteccad.com/life-safety-dampers/): Fire Dampers View Products Motorized Smoke Dampers View Products Motorized Smoke/Fire Dampers View Products Motorized Fire Dampers View Products Quadrant Fire Dampers View Products
- [Variable Air Volume](https://beteccad.com/variable-air-volume/): window.option_df_9506 = {"outline":,"backgroundColor":"rgba(255, 255, 255, 0)","autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"https:\/\/beteccad.com\/wp-content\/uploads\/2025\/08\/BC01-Variable-Air-Volume-VAV.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}
- [Certifications](https://beteccad.com/certifications/): Certifications
- [Products](https://beteccad.com/products/): All Products Life Safety Dampers View Products Industrial Dampers View Products Commercial Control Dampers View Products Variable Air Volume Terminals View Products Acoustic Control View Products Louvers View Products Access Doors View Products Fire Rated Doors View Products Air Outlets View Products
- [About](https://beteccad.com/about/): Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
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- [Contact](https://beteccad.com/contact/): +971 6 5575252 Info@beteccad.com Sales@beteccad.com Factory 1 Betec Cad Industries FZC, Plot P4-02 Sharjah Airport International Free zone, Sharjah, UAE 8805 Factory 2 Betec Cad Industries LLC, Plot No 0858, Umm Al Thoub, Umm Al Quwain, UAE-326968 Factory 3 Betec (CAD) India Pvt. Ltd, Plot No. 02, EPIP Zone, IDA-Pashamylaram, Isnapur-Patencheru, Hyderabad-502307, Telangana, India.
- [Blog](https://beteccad.com/blog/): Hub IT allows your business and technology computers to store, transmit, analyze, and manipulate big data.
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- [Solutions](https://beteccad.com/solutions/): We’re a brand strategy and digital design agency, building brands that matter in culture.

## Layouts
- [Shop archive layout](https://beteccad.com/woodmart_layout/shop-archive-layout/)

## HTML Blocks
- [Products](https://beteccad.com/?cms_block=products): Life safety dampers Variable Air Volume Terminals Access doors Industrial Dampers Acoustic Control Fire rated doors Commercial Control Dampers Louvers Air Outlets
- [sales nav bar](https://beteccad.com/?cms_block=sales-nav-bar): Nigeria India South Korea Qatar Srilanka Bahrain Turkey UAE Algeria Iraq Thailand Kuwait Pakistan Hong Kong Jordan Oman USA Singapore KSA Egypt
- [Catalogue](https://beteccad.com/?cms_block=catalogue): Product Brochure MSFD Class-I Weather Louver Diffusers Variable Air Volume MSFD Class-II Sand Trap Louver Disc Value Sand Trap Louvers Volume Control Dampers TVD Tunnel Ventilation Damper Pressure Relief Dampers Filters Motorized Control Damper Gas Tight Damper Access Doors Duct Heaters Fire Dampers UL 555 Sound Attenutors Grilles Fire Door Acoustic Louvers
- [Footer](https://beteccad.com/?cms_block=life-safety-dampers): Quick links About Certifications Projects Laboratory Careers Blogs Privacy Policy Terms & Conditions Industries Tunnel / Industrial Oil and gas Nuclear Residential/Commercial Marine Our Products Life safety dampers Industrial dampers Commercial control dampers Variable air volume terminals Acoustic control Louvers Access doors Fire rated doors Air outlets GET IN TOUCH Factory 1 Betec Cad Industries FZC, Plot P4-02 Sharjah Airport International Free zone, Sharjah, UAE 8805 Factory 2 Betec Cad Industries LLC, Plot No 0858, Umm Al Thoub, Umm Al Quwain, UAE-326968 Factory 3 Betec central air distribution systems India Private Limited, Plot No. 02, EPIP Zone, IDA-Pashamylaram, Isnapur-Patencheru, Hyderabad-502307, Telangana, India. All Rights Reserved © 2025 | Developed by Social Matters

## Sales Employees
- [Mr. Vinay Sriniketh](https://beteccad.com/sales_employees/mr-vinay-sriniketh/)
- [Mr. Malik Khan](https://beteccad.com/sales_employees/mr-malik-khan/)
- [Eng.Raafat Harby](https://beteccad.com/sales_employees/eng-raafat-harby/)
- [Mr. Mohammed Zaher](https://beteccad.com/sales_employees/mr-mohammed-zaher/)
- [Mr. Intesab Ahmed](https://beteccad.com/sales_employees/mr-intesab-ahmed/)
- [Mr. Husnain](https://beteccad.com/sales_employees/mr-husnain/)
- [Mr. Joshua Jacob](https://beteccad.com/sales_employees/mr-joshua-jacob/)
- [Mr. Faisal Sayeed](https://beteccad.com/sales_employees/mr-faisal-sayeed/)
- [Mr. Nikhil P.M](https://beteccad.com/sales_employees/mr-nikhil-p-m/)
- [Mr. Sayed Sherhan](https://beteccad.com/sales_employees/mr-sayed-sherhan/)
- [Mr. Sandeep Pal](https://beteccad.com/sales_employees/mr-sandeep-pal/)

## Projects
- [Qiddiya Resort Core](https://beteccad.com/project/qiddiya-resort-core/)
- [Rehabilitation of Port Harcourt Refinery](https://beteccad.com/project/rehabilitation-of-port-harcourt-refinery/)
- [Iraq Basrah Refinery Upgrading Project](https://beteccad.com/project/iraq-basrah-refinery-upgrading-project/)
- [Sobha Realty](https://beteccad.com/project/sobha-realty-u-a-emultiple-projects/)
- [New Al Jahra Hospital – Kuwait](https://beteccad.com/project/new-al-jahra-hospital-kuwait/)
- [Parliaments Building New Cairo](https://beteccad.com/project/parliaments-building-new-cairo/)
- [King Hussein Cancer Hospital](https://beteccad.com/project/king-hussein-cancer-hospital/)
- [Tuberculosis Hospital](https://beteccad.com/project/tuberculosis-hospital/)
- [Queen Alia Airport](https://beteccad.com/project/queen-alia-airport/)
- [Baraka Power Plant](https://beteccad.com/project/baraka-power-plant/)
- [MIRFA Power & Desalination Plant](https://beteccad.com/project/mirfa-power-desalination-plant/)
- [Zahia City Centre – (Carrefour)](https://beteccad.com/project/zahia-city-centre-carrefour/)
- [BAB integrated facilities project](https://beteccad.com/project/bab-integrated-facilities-project/)
- [New Maternity Hospital](https://beteccad.com/project/new-maternity-hospital/)
- [MUD (Mixed Use Development)](https://beteccad.com/project/mud-mixed-use-development/)
- [VLCC Kahla (Bahri Vessels)](https://beteccad.com/project/vlcc-kahla-bahri-vessels/)
- [Schools – Al Shamal & Al Shahaniya](https://beteccad.com/project/schools-al-shamal-al-shahaniya/)
- [Duqm Refinery](https://beteccad.com/project/duqm-refinery/)
- [Green Field Area](https://beteccad.com/project/green-field-area/)
- [Amaad Business Park](https://beteccad.com/project/amaad-business-park/)
- [Blue Waters The Warf](https://beteccad.com/project/blue-waters-the-warf/)
- [Hatta Hydro Power Plant Project](https://beteccad.com/project/hatta-hydro-power-plant-project/)
- [Najaf Hospital](https://beteccad.com/project/najaf-hospital/)
- [School Project – Doha Festival City](https://beteccad.com/project/school-project-doha-festival-city/)
- [King Salman Hospital](https://beteccad.com/project/king-salman-hospital/)
- [IBRI Power Plant](https://beteccad.com/project/ibri-power-plant/)
- [Fakeeh University Hospital](https://beteccad.com/project/fakeeh-university-hospital/)
- [King Abdullah financial district](https://beteccad.com/project/king-abdullah-financial-district/)
- [Tadawul, Saudi Arabia](https://beteccad.com/project/tadawul-saudi-arabia/)
- [KIPIC – Al Zour Refinery](https://beteccad.com/project/kipic-al-zour-refinery/)
- [Dubai Metro Route Expo 2020](https://beteccad.com/project/dubai-metro-route-expo-2020/)
- [Neuro Spinal Hospital](https://beteccad.com/project/neuro-spinal-hospital/)
- [KOC Feed pipelines for NRP – Building](https://beteccad.com/project/koc-feed-pipelines-for-nrp-building/)
- [Karbala Refinery](https://beteccad.com/project/karbala-refinery/)
- [Dhakira Sewage Treatment Plant](https://beteccad.com/project/dhakira-sewage-treatment-plant/)
- [Business Park & Hotel Facilities](https://beteccad.com/project/business-park-hotel-facilities/)
- [3 Star Hotel, Premier Inn Expansion at Ibn Battuta](https://beteccad.com/project/3-star-hotel-premier-inn-expansion-at-ibn-battuta/)
- [NEOM Grid – PV and Wind Farm Power Plants](https://beteccad.com/project/neom-grid-pv-and-wind-farm-power-plants/)
- [Dr. Sulaiman Al-Habib Hospital in Al-Hamra](https://beteccad.com/project/dr-sulaiman-al-habib-hospital-in-al-hamra/)
- [Qualcomm](https://beteccad.com/project/qualcomm/)
- [Venezuela Refinery](https://beteccad.com/project/venezuela-refinery/)
- [Lusail LRT Project – Doha Metro Rail](https://beteccad.com/project/lusail-lrt-project-doha-metro-rail/)
- [MASFRAF AL RAYAN Bank – New Head Office Building](https://beteccad.com/project/masfraf-al-rayan-bank-new-head-office-building/)
- [Microsoft](https://beteccad.com/project/microsoft/)
- [Al Rahmania Mall, Sharjah](https://beteccad.com/project/al-rahmania-mall-sharjah/)
- [Telecom buildings at EXPO 2020](https://beteccad.com/project/telecom-buildings-at-expo-2020/)
- [Al Bayt Stadium](https://beteccad.com/project/al-bayt-stadium/)
- [Behavioral care Special Hospital](https://beteccad.com/project/behavioral-care-special-hospital/)
- [Schools – Al Doha VillageSchools – Al Doha Village](https://beteccad.com/project/schools-al-doha-villageschools-al-doha-village/)
- [Al Dhakira Sewage Treatment Plant](https://beteccad.com/project/al-dhakira-sewage-treatment-plant/)
- [King Abdullah Economic City](https://beteccad.com/project/king-abdullah-economic-city/)
- [Al Zour Refinery – Kuwait](https://beteccad.com/project/al-zour-refinery-kuwait/)
- [Aster Hospital](https://beteccad.com/project/aster-hospital/)
- [KIPIC – OSF Building](https://beteccad.com/project/kipic-osf-building/)
- [Qatar Silhouette Tower](https://beteccad.com/project/qatar-silhouette-tower/)
- [Qatar Petroleum District](https://beteccad.com/project/qatar-petroleum-district/)
- [Sidra Village Staff Housing](https://beteccad.com/project/sidra-village-staff-housing/)
- [Ain Khalid Bus Hub](https://beteccad.com/project/ain-khalid-bus-hub/)
- [Construction and upgrade of Rayyan Road](https://beteccad.com/project/construction-and-upgrade-of-rayyan-road/)
- [Doha Port](https://beteccad.com/project/doha-port/)
- [Doha Metro — Greenline underground project](https://beteccad.com/project/doha-metro-greenlineijnderground-project/)
- [Al Ameen City Towers](https://beteccad.com/project/al-ameen-city-towers/)
- [Dubai Hills Mall](https://beteccad.com/project/dubai-hills-mall/)
- [Riyadh Metro](https://beteccad.com/project/riyadh-metro/)
- [Makkah](https://beteccad.com/project/makkah/)
- [One Za’abeel](https://beteccad.com/project/one-zaabeel/)
- [Mid-Field Terminal – AD International AirportUAE](https://beteccad.com/project/mid-field-terminal-ad-international-airportuae/)
- [Downtown Views 2](https://beteccad.com/project/downtown-views-2/)
- [Enhancement and Improvement of select Metro Station](https://beteccad.com/project/enhancement-and-improvement-of-select-metro-station/)
- [Zadco Zircu Project](https://beteccad.com/project/zadco-zircu-project/)
- [Khazzan Oil Field](https://beteccad.com/project/khazzan-oil-field/)

## Certificates
- [EMS](https://beteccad.com/certificates/ems/)
- [ABS MA Certificate](https://beteccad.com/certificates/abs-ma-certificate/)
- [OSHAS](https://beteccad.com/certificates/oshas/)
- [UL](https://beteccad.com/certificates/ul/)
- [CE-2 Certificate](https://beteccad.com/certificates/ce-2-certificate/)
- [CE-1 Certificate](https://beteccad.com/certificates/ce-1-certificate/)
- [AMCA](https://beteccad.com/certificates/amca/)
- [ISO 9001](https://beteccad.com/certificates/iso-9001/)
- [RAK Civil Defence](https://beteccad.com/certificates/rak-civil-defence/)
- [Civil Defense (OMAN)](https://beteccad.com/certificates/civil-defense-oman/)
- [Civil Defense (Qatar)](https://beteccad.com/certificates/civil-defense-qatar/)
- [Civil Defense (Kuwait)](https://beteccad.com/certificates/civil-defense-kuwait/)
- [Civil Defense (Sharjah)](https://beteccad.com/certificates/civil-defense-sharjah/)
- [Civil Defense (Dubai)](https://beteccad.com/certificates/civil-defense-dubai/)
- [Civil Defense (Abu Dhabi)](https://beteccad.com/certificates/civil-defense-abu-dhabi/)

## Products
- [Disc Valve Supply](https://beteccad.com/product/disc-valve-supply/): Standard Construction Details Frame  Steel Sheet Disc Steel Sheet Mounting Ring  Galvanized steel Finish Available with RAL powder coating, please specify color. Optional Fittings Finish Mill finish or Chrome plating. Foam Gasket Provided all around the frame, to prevent leakage of air. Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Plenum Casing 0.7 mm thick galvanized steel sheet. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Available with RAL powder coating, please specify color.
- [MSFD-GB-31C3-A-R](https://beteccad.com/product/msfd-gb-31c3-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 3 hrs. Leakage Rating : Class - III Max Velocity : 2000 fpm Operating Temperature : 350°F (176°C) for ½ hr - Class-III Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-31C3 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [MSFD-GB-31C2-A-R](https://beteccad.com/product/msfd-gb-31c2-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 3 hrs. Leakage Rating : Class - II Max Velocity : 2000 fpm Operating Temperature : 250 °F (121 °C) for ½ hr - Class- II Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.9 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.9 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-31C2 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [MSFD-GB-31C1-A-R](https://beteccad.com/product/msfd-gb-31c1-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 3 hrs. Leakage Rating : Class - I Max Velocity : 2000 fpm Operating Temperature : 250 °F (121 °C) for ½ hr Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.9 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.9 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-31C1 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [MSFD-GB-21C3-A-R](https://beteccad.com/product/msfd-gb-21c3-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 1½ hrs. Leakage Rating : Class - III Max Velocity : 2000 fpm Operating Temperature : 350°F (176°C) for ½ hr - Class-III Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-21C3 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [MSFD-GB-21C2-A-R](https://beteccad.com/product/msfd-gb-21c2-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 1½ hrs. Leakage Rating : Class - II Max Velocity : 2000 fpm Operating Temperature : 250°F (121°C) for ½ hr- Class-II Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-21C2 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [MSFD-GB-21C1-A-R](https://beteccad.com/product/msfd-gb-21c1-a-r-2/): UL- 555/555S Test Ratings Fire Rating : 1½ hrs. Leakge Rating : Class - I Max Velocity : 2000 fpm Operating Temperature : 250°C (482 °F) for 1 hr* (HKFSD), 250°C (482 °F) for 2 hr* (HKFSD) Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blade Seals Silicon rubber blade seals. Jamb Seals Stainless steel. Jack Shaft ½” x ½” (12 mm) Galvanized steel square shaft. Thermal Response Device (TRD) 165°F (74°C). Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC) Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Limit Switches For BMS open / close indication. Indicator Externally mounted open, close visible Indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MSFD-GB-21C1 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view)   Note : FC : Fail Close in the event of Fire FO : Fail Open in the event of Fire   * The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.   Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)
- [FD-SGB-22-A-B-AS-BS-R](https://beteccad.com/product/fd-sgb-22-a-b-as-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 20 gauge (0.9 mm) thick stainless steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring Mounting Vertical Optional Fittings Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model :FD-SGB-22-A/B/AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [SA B 20 Series – AMCA](https://beteccad.com/product/sa-b-20-series-amca/): Standard Construction Casing 0.9 mm thick galvanized steel sheet. Splitters 0.7 mm / 0.9 mm thick Ø3 mm hole perforated galvanized steel sheet. Insulation 48 kg/m³ Density rockwool coverd with Black glass tissue. Flanges 25 mm Ductmate flanges on both ends. Optional Fittings Flanges Mild steel angles with red oxide or zinc coating, having Ø8 mm holes at a pitch of 250 mm. Alternate hole pitch available on customers request. Optional Construction Casing : Thickness Up to 3 mm Splitters : 0.9 mm thick Ø5 mm hole perforated galvanized steel sheet. Casing and Splitter Material : Stainless Steel (304/316L) Insulation: 48 kg/m³ Density fiberglass wool covered with black glass tissue. Features • BETEC CAD.'s B20 series Sound Attenuators are aerodynamically designed with bullnose splitters at inlet for square and rectangular type. The standard construction is suitable to withstand a maximum pressure of 2000 Pa. • Square and Rectangular type sound attenuators are designed for handling maximum air capacities at minimum pressure drop. • The turbulence of the airflow is minimized due to the bullnose design of the splitter at the air inlet. • Solid curved splitter face minimises noise generation at the air inlet. • Acoustic infill media is of superior quality, non combustible and has fungi resistant characteristics complying to and ASTM C 612 • These sound attenuators are maintanance free. Applications Sound attenuators are designed to attenuate noises of fans, air-conditioning devices in ventilation and air-conditioning systems , Air Handling Units, Fan Inlet and Discharge , Generator rooms and HVAC Duct Systems. BETEC CAD. sound attenuators are suitable for DW 142 class C applications. Attenuator constructional integrity is suitable for pressures up to 2000 pa. Sound Attenuators are tested and certified by INTERTEK USA for ASTM standard E477-13 entitled “ Standard method for Laboratory Measurements of Acoustical & Airflow performance of Duct liner materials & Prefabricated Silencers” Note : Please contact BETEC CAD. for customized design and specification.
- [SA B 30 Series](https://beteccad.com/product/sa-b-30-series/): Standard Construction Casing 0.9 mm thick galvanized steel sheet. Splitters 0.7 mm / 0.9 mm thick Ø3 mm hole perforated galvanized steel sheet. Insulation 48 kg/m³ Density rockwool coverd with Black glass tissue. Optional Fittings Flanges Mild steel angles with red oxide or zinc coating, having Ø8 mm holes at a pitch of 250 mm. Alternate hole pitch available on customers request. Optional Construction Casing : Thickness Up to 3 mm Splitters : 0.9 mm thick Ø5 mm hole perforatedgalvanized steel sheet. Casing and Splitter Material : Stainless Steel (304/316L) Insulation: 48 kg/m³ Density fiberglass wool covered with black glass tissue. Features • BETEC CAD's Sound Attenuator CS - B30 Series is of Cylindrical type. This Attenuator has been developed with special concern for both "on-fan" and "in-duct" situation and is suitable for use up to a maximum pressure of 1500 Pa. • Central splitter is a conical inlet to minimize self generated noise and pressure loss. • Cylindrical type Sound Attenuators are installed in the duct work between spaces, which must provide noise reduction of air borne noise to at least match the • sound transmission loss of the separating structure. • The cylindrical type Attenuators can be used where there is a demand for large amount of low frequency attenuation. • All models of Sound Attenuators are shorter inlength, smaller in cross-section and easily installable at site. Circular duct work does not require round to rectangular transition. • Acoustic infill media is of superior quality, non combustible and has fungi resistant characteristics complying to and ASTM C 612. • These sound attenuators are maintanance free. Applications Round sound attenuators are used in ventilation and airconditioning systems to attenuate noise in fan inlet & discharge units, HVAC duct systems, radiators etc. They are suitable for installation in either inlet or outlet pipes of axial fans, in inlet pipes of radial fans or installation in circular cross-section ducts. BETEC CAD. sound attenuators are suitable for DW 142class C applications. Attenuator constructional integrity is suitable for pressures up to 1500 pa.
- [SA B 40 Series](https://beteccad.com/product/sa-b-40-series/): Standard Construction Casing 0.9 mm thick galvanized steel sheet. Splitters 0.7 mm / 0.9 mm thick Ø3 mm hole perforated galvanized steel sheet. Insulation 48 kg/m³ Density rockwool coverd with Black glass tissue. Flanges 25 mm Ductmate flange or slip connection on both ends. Optional Construction Casing : Thickness Up to 3 mm Splitters : 0.9 mm thick Ø5 mm hole perforatedgalvanized steel sheet. Casing and Splitter Material : Stainless Steel (304/316L) Insulation: 48 kg/m³ Density fiberglass wool covered with black glass tissue. Features • BETEC CAD. manufactures Cross Talk Attenuators which are installed to provide maximum background voice,sound masking effect for each office zone, there by improving speech privacy and aural comfort with acceptable pressure drop level. • Sturdy maintanance free construction with high noise absorbing capacity to obtain required insertion loss without compromising on performance. • Acoustic infill media is of superior quality, non combustible and has fungi resistant characteristics complying to and ASTM C 612. • These attenuators can be installed in places where speech privacy is required or noise generated in areas • is frequently causing disturbance and distraction. • These sound attenuators are maintanance free. Applications Cross Talk Attenuators are suitable for crosstalk applications (to attenuate openings in partitions above ceiling voids) ,terminal equipment applications , and are installed within air conditioning or ventilation ductwork systems to reduce the transmission of airborne ducted noise. Other applications include common ductwork serving male-female toilets / changing areas, or for privacy between adjacent cellular offices, penetrations in partitions requiring high acoustic performance,broadcasting / recording studios.
- [Gas Tight Damper – Pneumatic](https://beteccad.com/product/gas-tight-damper-pneumatic/): Damper Ratings Max Leakage Rating : As per Standards KTA 3601(0.01 m3/h x m2 at 2000 Pa) Operational Rating : Actual ratings are size dependent Air Velocity: 3000 fpm (15 mt/sec) Pressure : 8"water gauge (2KPa). Max . Holding Pressure: 20” W.g (5Kpa) (in closed condition) Temperature Ratings Operational Temp : 250°C/482°F for a minimum of 2Hr. Normal operation : -20°C to +120°C No Fire : -4°F to + 248°F Tunnel Application : -20°C to +250°C for 2 hours minimum Under Fire : -4°F to / +482°F for 2 hours minimum Standard Construction Details Frame 14 gauge (2 mm) thick galvanized steel sheet with 2" (50mm) external flanges. Blade Double Skin blades (Aerofoil) of 14 gauge (2 mm) thick roll formed galvanized steel Blade Seals 300°C High temp, resistant Silicon rubber blade seals. Jamb Seals Stainless Steel. Bearings High temperature resistant concealed ball bearings. Axle ¾" (19 mm) Diameter axle. Drive : Operation by electric actuator 24V / 230 V Model : Exmax / RedMax Note : * Standard Construction.
- [Gas Tight Damper – Electric](https://beteccad.com/product/gas-tight-damper-electric/): Damper Ratings Max Leakage Rating : As per Standards KTA 3601(0.01 m3/h x m2 at 2000 Pa) Operational Rating : Actual ratings are size dependent Air Velocity: 3000 fpm (15 mt/sec) 2000 Pa Pressure : 8"water gauge (2KPa). Max . Holding Pressure: 20” W.g (5Kpa) (in closed condition) Explosion Proof Ratings Installation Area : Zone 1,2,21,22 Ambient tempetature : -40°…+40°C (at T6) -40°…+50°C (at T5) Certification for Gases : II 2(1) G Ex d IIC T6 II 3 (1)G Ex nC IIC T6 II 3 (1)G Ex nC IIC T6 Certification for dust II 2(1) G Ex d IIC T6 II 3 D Ex tD A22 IP66T80°C Standard Construction Details Frame 14 gauge (2 mm) thick galvanized steel sheet with 2" (50mm) external flanges. Blade Double Skin blades (Aerofoil) of 14 gauge (2 mm) thick roll formed galvanized steel Blade Seals 300°C High temp, resistant Silicon rubber blade seals. Jamb Seals Stainless Steel. Bearings High temperature resistant concealed ball bearings. Axle ¾" (19 mm) Diameter axle. Drive : Operation by electric actuator 24V / 230 V Model : Exmax / RedMax Note : * Standard Construction.
- [Supply Linear Bar Grille Double Deflection – INTERTEK](https://beteccad.com/product/supply-linear-bar-grille-double-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Face bars Extruded Aluminium Solid blades at 15°, 2-way throw. Bar Spacing Standard Blade Spacing of 9 mm. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Supply Linear Bar Grille Single Deflection – INTERTEK](https://beteccad.com/product/supply-linear-bar-grille-single-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Face bars Extruded Aluminium Solid blades at 15°, 2-way throw. Bar Spacing Standard Blade Spacing of 9 mm. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Supply Air Grille Double Deflection – INTERTEK](https://beteccad.com/product/supply-air-grille-double-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Damper Opposed Blade Damper with extruded aluminum frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Supply Air Grille Single Deflection – INTERTEK](https://beteccad.com/product/supply-air-grille-single-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Return Linear Bar Grille Double Deflection – INTERTEK](https://beteccad.com/product/return-linear-bar-grille-double-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Face bars Extruded Aluminium Solid blades at 15°, 2-way throw. Bar Spacing Standard Blade Spacing of 9 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Return Linear Bar Grille Single Deflection – INTERTEK](https://beteccad.com/product/return-linear-bar-grille-single-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Face bars Extruded Aluminium Solid blades at 15°, 2-way throw. Blade Spacing Standard Blade Spacing of 9 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Return Air Grille Double Deflection – INTERTEK](https://beteccad.com/product/return-air-grille-double-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Return Air Grille Single Deflection – INTERTEK](https://beteccad.com/product/return-air-grille-single-deflection-intertek/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Egg Crate Grille](https://beteccad.com/product/egg-crate-grille-2/): Standard Construction Details Frame Extruded aluminium profiles with 27 mm Flange width. Egg Crate Core 12.5 x 12.5 x 12.5 mm aluminium grid. Finish Available with RAL powder coating, please specify color. Optional Fittings Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Extract Air Grille](https://beteccad.com/product/extract-air-grille/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Damper Finish Black matte. Filter Aluminium media Filter. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Door Grille](https://beteccad.com/product/door-grille-2/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Return Air Register Double Deflection](https://beteccad.com/product/return-air-register-double-deflection/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Filter Aluminium media filter Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Supply Air Register Double Deflection](https://beteccad.com/product/supply-air-register-double-deflection/): Standard Construction Details Frame Extruded aluminium profiles with 30 mm flange width. Blades Extruded Aluminium aerofoil blades. Blade Spacing Standard Blade Spacing of 20 mm. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Finish Available with RAL powder coating, please specify color. Optional Fittings Flange 25 mm Flange width. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Filter Aluminium media filter Finish Mill finish or Chrome plating. Frame and Blades Available in Stainless steel (304/316L).
- [Jet Nozzle](https://beteccad.com/product/jet-nozzle/): Standard Construction Details Frame Aluminium sheet. Outer flange Aluminium sheet. Inner rings Aluminium spun rings. Mounting plate 1.2 mm thick aluminium sheet. Finish Mill Finish Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Plenum Casing 0.7 mm thick galvanized steel sheet. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Available with RAL powder coating, please specify color.
- [Disc Valve Exhaust](https://beteccad.com/product/disc-valve-exhaust/): Standard Construction Details Frame SteelSheet Disc Steel Sheet Mounting Ring Galvanized steel Finish Available with RAL powder coating, please specify color. Optional Fittings Finish Mill finish or Chrome plating. Foam Gasket Provided all around the frame, to prevent leakage of air. Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Plenum Casing 0.7 mm thick galvanized steel sheet. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Available with RAL powder coating, please specify color.
- [Ball Jet Diffuser](https://beteccad.com/product/ball-jet-diffuser/): Standard Construction Details High Quality Aluminium Construction Finish Mill finish Optional Fittings Mounting plate 1.2 mm thick aluminium sheet. Foam Gasket Provided all around the frame, to prevent leakage of air. Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Plenum Casing 0.7 mm thick galvanized steel sheet. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Available with RAL powder coating, please specify color.
- [Round Swirl Diffusers](https://beteccad.com/product/round-swirl-diffusers/): Standard Construction Details Frame 0.9 mm Aluminium sheet. Diffusers Blades Rotatable type. Finish Available with RAL powder coating, please specify color. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum are available with circuler, square or rectanguler spigots in either top or side. Plenum Casing 0.7 mm thick Glavanized steel sheet. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Mill finish.
- [Swirl Diffusers](https://beteccad.com/product/swirl-diffusers/): Standard Construction Details Diffuser 1.2 mm Galvanized steel sheet. Deflectors rotatable type plastic diffusers. Module 595 x 595 mm. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Casing 0.7 mm thick galvanized steel. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Finish Mill finish.
- [Linear Slot Diffusers Supply – Intertek](https://beteccad.com/product/linear-slot-diffusers-supply-intertek/): Standard Construction Details Frame Extruded Aluminum profile. Deflection Blades Extruded Aluminum profile. Damper Galvanized steel hit and miss damper with black matte finish. Slot Width 25 mm. Number of Slots 1,2,3,4,5,6,7,8. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Slot width 16 & 20 mm. Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating.
- [Diffusers with Equalizing Grid 4-way](https://beteccad.com/product/diffusers-with-equalizing-grid-4-way/): Standard Construction Details Frame Extruded aluminium profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Equalizing Grid Extruded aluminium profile frame and blade. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Diffusers 4-way – Intertek](https://beteccad.com/product/diffusers-4-way-intertek/): Standard Construction Details Frame Extruded aluminium profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Diffusers 3-way](https://beteccad.com/product/diffusers-3-way/): Standard Construction Details Frame Extruded aluminium profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Diffusers 2-way Corner](https://beteccad.com/product/diffusers-2-way-corner/): Standard Construction Details Frame Extruded aluminium profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Diffusers 2-way](https://beteccad.com/product/diffusers-2-way/): Standard Construction Details Frame Extruded aluminium profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminium frame and blade operated with screw. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Diffusers 1-way](https://beteccad.com/product/diffusers-1-way/): Standard Construction Details Frame Extruded aluminum profile with 33 mm flange width. Core Die punched single piece sheet. Damper Opposed Blade Damper with extruded aluminum frame and blade operated with screw. Bushes Nylon. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum Chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, square or rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Damper Finish Black matte. Finish Mill finish or Chrome plating. Frame and Core Available in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)
- [Linear Slot Plenums](https://beteccad.com/product/linear-slot-plenums/): Standard Construction Details Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Plenum Casing 0.7 mm thick galvanized steel. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density. Neck Reducer (R) 0.7 mm Thick Galvanized steel sheet adopted to neck Available in Square / Round.
- [Linear Slot Diffusers Return – Intertek](https://beteccad.com/product/linear-slot-diffusers-return-intertek/): Standard Construction Details Frame Extruded Aluminum profile. Deflection Blades Extruded Aluminum profile. Damper Galvanized steel hit and miss damper with black matte finish. Slot Width 25 mm. Number of Slots 1,2,3,4,5,6,7,8. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Slot width 16 & 20 mm. Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating.  
- [Diffusers – With Media Filter 4-way](https://beteccad.com/product/diffusers-with-media-filter-4-way/): Standard Construction Details Frame Extruded aluminium profile with 30 mm flange width. Core Die punched single piece sheet. Filter 12 mm Thick aluminium media filter. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Filter 25 mm Thick aluminium media filter. Neck Reducer (R) Neck reducers are available with circular, rectangular spigots in top entry only. Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating. Frame and Core Avialable in Stainless Steel (304/316L). Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling. SAD - Supply Air Diffuser (with Damper) & RAD - Return Air Diffuser (without Damper)  
- [Perforated Diffusers 4-way](https://beteccad.com/product/perforated-diffusers-4-way/): Standard Construction Details Frame Extruded aluminium profile with 30 mm flange width. Core Die punched single piece sheet. Perforated Panel 0.9 mm Galvanized steel sheet with 3mm hole. Plenum box 0.7 mm Thick Glavanized steel sheet. Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Neck Reducer (R) Neck reducers are available with circular, rectangular spigots in top entry only. Foam Gasket Can be provided through out the back of frame, to prevent the leakage of air. Finish Mill finish or Chrome plating. Features Efficient, draftless air distribution for all types of ceilings. Air pattern controllers do not dampen the air in any way. Flow rate and sound level remain constant regardless of air pattern required. Air pattern controllers can be replaced to any desired pattern. Perforated surface plate completely conceals pattern controllers. Always available in powder coated finish in any colour to match with the false ceiling grid. For supply diffusers, perforated face is dropped slightly below the ceiling. Concealed fixing and easily removable perforated face, give easy access to air pattern deflectors and control damper. Suitable for installation into tiled ceilings. Spigot air inlets are available in a variety of sizes, suitable for flexible duct connections. Note: Available in rectangular sizes & are suitable for flush mounting in lay-in type ceiling.  
- [Curved Linear Slot Diffusers](https://beteccad.com/product/curved-linear-slot-diffusers/): Standard Construction Details Frame Extruded aluminum profile. Deflection Blades Extruded Aluminum profile. Slot Width 25 mm. Number of Slots 1,2,3,4,5,6,7,8 Finish Available with RAL powder coating, please specify color. Optional Fittings Slot width 16 & 20 mm. Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating.
- [Round Diffusers](https://beteccad.com/product/round-diffusers/): Standard Construction Details Frame Extruded aluminum profile. Core Die punched single piece sheet. Damper Butterfly type opposed blade damper made of galvanized steel operated with screw Finish Available with RAL powder coating, please specify color. Optional Fittings Plenum chamber Plenum is available with circular, square or rectangular spigots in either top or side entry applications. Foam Gasket Provided all around the frame, to prevent leakage of air. Finish Mill finish or Chrome plating. Plenum Construction Casing 0.7 mm thick galvanized steel. Insulation Acoustic liner of 13 mm thickness, 32 kg/m³ density.   Model : : SADR-AB-31 + Plenum N = Nominal Duct Dia; A = Neck Dia; B = Outer/Face Dia; h1 = Diffuser Height; H = Diffuser with Damer Height W = Plenum Width; G = Plenum Height; D = Plenum inlet
- [FD-GBD-30-AS-BS-R](https://beteccad.com/product/fd-gbd-30-as-bs-r/): UL- 555 Test Ratings Fire Rating : 3 hrs. Max Velocity : 2000 fpm (for Dynamic Systems) Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.33 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model : FD-GBD-30-AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-31-A-AS-B-BS-R](https://beteccad.com/product/fd-gb-31-a-as-b-bs-r/): UL- 555 Test Ratings Fire Rating : 3 hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F (74°C). Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide constant force spring formed from stainless steel. Mounting Vertical / Horizontal Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40x40x1.5 mm). Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model : FD-GB-31-A/AS/B/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-30-A-AS-B-BS-R](https://beteccad.com/product/fd-gb-30-a-as-b-bs-r/): UL- 555 Test Ratings Fire Rating : 3 hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model : FD-GB-30-A/AS/B/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-30-A-AS-B-BS-AF-BF-R](https://beteccad.com/product/fd-gb-30-a-as-b-bs-af-bf-r/): UL- 555 Test Ratings Fire Rating : 3 hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame : Stainless Steel 18 gauge (304/316L) Blade : Stainless Steel 22 gauge (304/316L)   Model : FD-GB-30-A/AS/B/BS/AF/BF/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GBD-20-AS-BS-AF-BF-R](https://beteccad.com/product/fd-gbd-20-as-bs-af-bf-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Max Velocity : 2000 fpm (for Dynamic Systems) Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Spring 0.33 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame : Stainless Steel 18 gauge (304/316L) Blade : Stainless Steel 22 gauge (304/316L)   Model : FD-GBD-20-AS/BS/AF/BF/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-SB-22-A-B-AS-BS-R](https://beteccad.com/product/fd-sb-22-a-b-as-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 20 gauge (0.9 mm) thick stainless steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick stainless steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick stainless steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring Mounting Vertical Optional Fittings Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model :FD-SB-22-A/B/AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GSB-22-A-B-AS-BS-R](https://beteccad.com/product/fd-gsb-22-a-b-as-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 20 gauge (0.9 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick stainless steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Optional Fittings Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model :FD-GSB-22-A/B/AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-22-A-B-AS-BS-R](https://beteccad.com/product/fd-gb-22-a-b-as-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 20 gauge (0.9 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Optional Fittings Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections.   Model :FD-GB-22-A/B/AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-21-A-AS-B-BS-R](https://beteccad.com/product/fd-gb-21-a-as-b-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F (74°C). Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide constant force spring formed from stainless steel. Mounting Vertical / Horizontal Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame : Stainless Steel 18 gauge (304/316L) Blade : Stainless Steel 22 gauge (304/316L)   Model : FD-GB-21-A/AS/B/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
- [FD-GB-20-A-AS-B-BS-R](https://beteccad.com/product/fd-gb-20-a-as-b-bs-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame : Stainless Steel 18 gauge (304/316L) Blade : Stainless Steel 22 gauge (304/316L)
- [FD-GB-20-A-AS-B-BS-AF-BF-R](https://beteccad.com/product/fd-gb-20-a-as-b-bs-af-bf-r/): UL- 555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 18 gauge (1.2 mm) thick galvanized steel. Blade Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link 165°F. Blade Ramp 16 gauge (1.5 mm) thick galvanized steel angle. Spring 0.3 mm thick by 19 mm wide, stainless steel constant force spring. Mounting Vertical / Horizontal Sleeve Minimum 0.7 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x1.5) mm. Limit Switches For BMS open / close indication. Transitions (R) Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame : Stainless Steel 18 gauge (304/316L) Blade : Stainless Steel 22 gauge (304/316L)   Model : FD-GB-20-A/AS/B/BS/AF/BF/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC,BOCA, ICBO, UL.
- [STL B-40 Series](https://beteccad.com/product/stl-b-40-series/): Standard Construction Frame 2 mm thick extruded aluminum profile. Blade 2 mm thick extruded aluminum profile. Blade Orientation Vertical. Blade Type U Shaped 100 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings Blade U Shaped 130 mm Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm   Note: Maximum single module construction - 3 x 2.5 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-41 and B-42 Heavy duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake.
- [STL B-30 Series](https://beteccad.com/product/stl-b-30-series/): Standard Construction Frame 1.2 mm thick extruded aluminum profile. Blade 0.9 mm thick roll formed aluminum curved profile. Blade Orientation Vertical. Blade Type U Shaped 100 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings Blade Curved type 150 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm   Note: Maximum single module construction - 3 x 2 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-31 Light duty and B-32 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake.
- [STL B-20 Series – AMCA](https://beteccad.com/product/stl-b-20-series-amca/): Standard Construction Frame 1.5 mm thick aluminum roll formed profile. Blade 1.2 mm thick aluminum roll formed profile. Blade Orientation Vertical. Blade Type U Shaped 130 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings Blade U Shaped 100 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm   Note: Maximum single module construction - 3 x 2 meters Multiple module available with mullion. Applications : Sand Trap Louvers AB-21 Light duty and AB-22 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake.
- [STL B-10 Series – AMCA](https://beteccad.com/product/stl-b-10-series-amca/): Standard Construction Frame 1.2 mm thick extruded aluminum profile. Blades 1.2 mm thick extruded aluminum profile. Blade Orientation Vertical. Blade Type U Shaped 100 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings Blade U Shaped 130 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm   Note: Maximum single module construction - 3 x 1.8 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-11 Light duty and B-12 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake.
- [WL B-40 Series – AMCA](https://beteccad.com/product/wl-b-40-series-amca/): Standard Construction Frame Material 120 mm deep, 2 mm thick extruded aluminum. Blade Material 2 mm thick extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Finish Mill finish. Optional Fittings drain sill. Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL Powder coating, please specify color. Features • Closely spaced horizontal blades minimize the penetration of wind-driven rain, reducing damage and additional operating expenses. • Performance as per AMCA 500 - L • Excellent pressure drop performance. • Aluminum construction for low maintenance and high resistance to corrosion. • Free area - 65.8% • Beginning of water penetration @ 892.9 fpm   Alphabet indicates the type of installation C - Flush Mounted Note: Maximum single module Construction - 2 x 2 meters Multiple module available with mullion.
- [WL B-10 Series – AMCA](https://beteccad.com/product/wl-b-10-series-amca/): Standard Construction Frame 45 mm deep, 1mm thick extruded aluminum. Blades 1.2 mm thick extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Blade Angle 45° Degree Finish : Mill finish Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Filter 13 / 25 mm thick aluminum filter Damper Control Damper Finish Available with RAL Powder coating, please specify color. Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm Features • Closely spaced horizontal blades minimize the penetration of wind-driven rain, reducing damage and additional operating expenses. • Free Area - 41.8% • Performance as per AMCA 500 - L • Excellent pressure drop performance. • Aluminum construction for low maintenance and high resistance to corrosion.   Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Note: Maximum single module construction - 1200 x 1200 mm Multiple module available with mullion.
- [WL B-20 Series – AMCA](https://beteccad.com/product/wl-b-20-series-amca/): Standard Construction Frame Material 70 mm deep 2mm thick extruded aluminum angle. Blade Material 1.5 mm thick extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Blade Angle 45° Degree Finish : Mill finish Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Filter 13 / 25 mm thick aluminum filter Damper Control Damper Finish Available with RAL Powder coating, please specify color. Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm Features • Closely spaced horizontal blades minimize the penetration of wind-driven rain, reducing damage and additional operating expenses. • Free Area 45.4% • Performance as per AMCA 500 - L • Excellent pressure drop performance. • Aluminum construction for low maintenance and high resistance to corrosion.   Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Note: Maximum single module construction - 2 x 1.5 meters. Multiple module available with mullion.
- [WL B-20 Series – AMCA](https://beteccad.com/product/wl-b-20-series-amca-2/): Standard Construction Frame 100 mm deep, 3 mm thick extruded aluminum. Blade Material 2 mm thick Aerofoil extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Blade Angle 45° Degree Finish : Mill finish Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Filter 13 / 25 mm thick aluminum filter Damper Control Damper Finish Available with RAL Powder coating, please specify color. Optional Construction Details Frame : Thickness up to 4 mm Blade : Thickness up to 4 mm Features • Low pressure drop performance with high free area. • Aluminum construction for low maintenance and high resistance to corrosion. • Free Area - 34.1% • Performance as per AMCA 500 - L • Excellent pressure drop performance.   Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Note: Maximum single module construction - 2 x 2 meters Multiple module available with mullion.
- [WL B-30 Series – AMCA](https://beteccad.com/product/wl-b-30-series-amca/): Standard Construction Frame Material 100 mm deep, 3 mm thick extruded aluminum. Blade Material 2 mm thick extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Blade Angle 45° Degree Finish : Mill finish Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Filter 13 / 25 mm thick aluminum filter Damper Control Damper Finish Available with RAL Powder coating, please specify color. Features • Performance as per AMCA 500 - L • Excellent pressure drop performance. • Aluminum construction for low maintenance and high resistance to corrosion. • Heavy duty durable construction. • Free area - 52% • Beginning of water Penetration @ fpm 1045   Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Note: Maximum single Module Construction - 2 x 1.5 meters. Multiple module available with mullion.
- [WL B-30 Series – AMCA](https://beteccad.com/product/wl-b-30-series-amca-2/): Standard Construction Frame Material 120 mm deep, 2 mm thick extruded aluminum. Blade Material 2 mm thick extruded aluminum. Blade Orientation Horizontal. Blade Type Fixed. Finish Mill finish. Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL Powder coating, please specify color. Features • Closely spaced horizontal blades minimize the penetration of wind-driven rain, reducing damage and additional operating expenses. • Excellent pressure drop performance. • Free area - 38.8% • Performance as per AMCA 500 - L • Aluminum construction for low maintenance and high resistance to corrosion.   Alphabet indicates the type of installation C - Flush Mounted Note: Maximum single module Construction - 2 x 2 meters Multiple module available with mullion.
- [MWL B-50 Series](https://beteccad.com/product/mwl-b-50-series/): Louver Performance Ratings Operating Pressure - 4” wg (1000Pa) Max Velocity - 1500 fpm (7.5 m/s) Standard Construction Frame 5.1”x 1” x 18 gauge (130 x 28 x 1.2 mm) roll formed galvanized steel ‘C’ Channel. Blades 6” (152mm) wide,1.5 mm thick (16 gauge) galvanized steel 3V type roll formed . Bushes Bronze. Mechanical Linkage Galvanized steel linkages concealed within the frame. Axles 12mm square galvanized steel. Gasket Foam gasket. Motor On/Off Finish Mill finish. Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Motor Modulate / Spring Return Finish Available with RAL Powder coating, please specify color. Features • Side jambseal provides tight closure. • AMCA 500 - L • Low pressure drop. • Aluminum construction for low maintenance and high resistance to corrosion. • Linkage concealed within the frame not exposed to weather conditions. Optional Construction Details Frame : Thickness up to 3 mm Frame Depth : Up to 150 mm Blade : Thickness up to 2 mm Blade width : Up to 150 mm Note: Maximum single module construction - 48” x 40” Multiple module available with mullion.
- [MWL B-50 Series](https://beteccad.com/product/mwl-b-50-series-2/): Louver Performance Ratings Operating Pressure - 4” wg (1000Pa) Max Velocity - 1500 fpm (7.5 m/s) Standard Construction Frame 5.1”x 1” x 18 gauge (130 x 28 x 1.2 mm) roll formed galvanized steel ‘C’ Channel. Blades 6” (152mm) wide,1.5 mm thick (16 gauge) galvanized steel 3V type roll formed . Bushes Bronze. Mechanical Linkage Galvanized steel linkages concealed within the frame. Axles 12mm square galvanized steel. Gasket Foam gasket. Motor On/Off Finish Mill finish. Optional Fittings Screen Galvanized Steel 0.4mm thick S-3 SS Bird screen S-10 SS Fly screen Motor Modulate / Spring Return Finish Available with RAL Powder coating, please specify color. Features • Side jambseal provides tight closure. • AMCA 500 - L • Low pressure drop. • Aluminum construction for low maintenance and high resistance to corrosion. • Linkage concealed within the frame not exposed to weather conditions. Optional Construction Details Frame : Thickness up to 3 mm Frame Depth : Up to 150 mm Blade : Thickness up to 2 mm Blade width : Up to 150 mm Note: Maximum single module construction - 48” x 40” Multiple module available with mullion.
- [AD B-30 Series](https://beteccad.com/product/ad-b-30-series/): Standard Construction Frame 0.9 mm thick galvanised steel. Door Double skin 0.9 mm thick galvanized steel internally insulated. Door thickness 25 mm. Insulation 48 kg/m³ density rockwool. Lock Die cast Zinc plated steel Cam lock. Gasket 3 mm thick Neoprene Gasket. Handle Galvanized steel handle. Flange Curved plain edge type flange. Optional Construction Door Double skin 0.9 mm thick galvanized steel internally insulated, door thickness 40 / 50 mm. Hinges One side Continuous hinges. Glass window Square transparent glass window. Security chain Galvanized steel chain. Frame and Door Material Stainless steel (304/316L) Note: N = Neck size (W x H) Overall Width = Neck width + 30 mm Overall Height = Neck Height + 30 mm Application • Suitable for installation on plain surface air ducts and can be installed easily on site works. • The insulated double wall construction will act as a barrier for leakage of air as well as for transfer of heat. • Suitable for insulated or uninsulated ducts.
- [AD B-20 Series](https://beteccad.com/product/ad-b-20-series/): Standard Construction Frame 0.9 mm thick galvanised steel. Door Double skin 0.9 mm thick galvanized steel internally insulated. Door thickness 25 mm. Insulation 48 kg/m³ density rockwool. Lock Die cast Zinc plated steel Toggle lock. Gasket 3 mm thick Neoprene Gasket. Handle Galvanized steel handle. Flange Type 1 : Plain edge type flange. Optional Construction Door Double skin 0.9 mm thick galvanized steel internally insulated, door thickness 40 / 50 mm. Hinges One side Continuous hinges. Flange Type 2 : Knock-over edge type flange. Glass window Square transparent glass window. Security chain Galvanized steel chain. Frame and Door Material Stainless steel (304/316L) Note: N = Neck size (W x H) Overall Width = Neck width + 30 mm Overall Height = Neck Height + 30 mm Application • Suitable for installation on plain surface air ducts and can be installed easily on site works. • The insulated double wall construction will act as a barrier for leakage of air as well as for transfer of heat. • Suitable for insulated or uninsulated ducts.
- [AD B-10 Series](https://beteccad.com/product/ad-b-10-series/): Standard Construction Frame 0.9 mm thick galvanised steel. Door Double skin 0.9 mm thick galvanized steel internally insulated. Door thickness 25 mm. Insulation 48 kg/m³ density rockwool. Lock Die cast Zinc plated steel Cam lock. Gasket 3 mm thick Neoprene Gasket. Handle Galvanized steel handle. Flange Type 1 : Plain edge type flange. Optional Construction Door Double skin 0.9 mm thick galvanized steel internally insulated, door thickness 40 / 50 mm. Hinges One side Continuous hinges. Flange Type 2 : Knock-over edge type flange. Glass window Square transparent glass window. Security chain Galvanized steel chain. Frame and Door Material Stainless steel (304/316L) Note: N = Neck size (W x H) Overall Width = Neck width + 30 mm Overall Height = Neck Height + 30 mm Application • Suitable for installation on plain surface air ducts and can be installed easily on site works. • The insulated double wall construction will act as a barrier for leakage of air as well as for transfer of heat. • Suitable for insulated or uninsulated ducts.
- [Steel Stiffened with Honeycomb/  Double Door-BS476-120 min – Construction Galvanized Steel](https://beteccad.com/product/steel-stiffened-with-honeycomb-double-door-bs476-120-min-construction-galvanized-steel/): Door Test Ratings Fire Rating : Upto 3 hours Test Standards : BS 476 part 20/22 Size Range Single door upto 4’ width x 10’ height Standard Construction Door 45 mm (1-¾’’) thick full flush construction. Galvanized steel to Zinc coating Z-22 to Z-27. Nominal door thickness 18 ga. Deep end channels at top and bottom of door for lasting integrity. Hinge 4.5 mm thick steel hinge reinforcements welded to the doors in compliance with SDI100. Standard hinge preparation is to be 4’’ x 4’’. Lock Face Plate 4.0 mm thick steel lock face plate reinforcement with tapped holes welded to the Doors. Standard lock preparation is to be provided in compliance with ANSI A115.1 or A115.2. Infill Honeycomb core. Hardware UL listed fire rated hardware or British Standard hardware. Finish RAL (Powder Coat) Optional Construction • Louvers • Vision Panel • Finish Wooden finish (Powder Coat) Metallic finish (Powder Coat) • Infill Polystyrene core door Stiffened Door with fiberglass insulation Polyurethane core door
- [Fire Rated Steel Door](https://beteccad.com/product/fire-rated-steel-door-3/): Door Test Ratings Fire Rating : Upto 3 hours Test Standards : BS 476 part 20/22 Size Range Single door upto 4’ width x 10’ height Standard Construction Door 45 mm (1-¾’’) thick full flush construction. Galvanized steel to Zinc coating Z-22 to Z-27. Nominal door thickness 18 ga. Deep end channels at top and bottom of door for lasting integrity. Hinge 4.5 mm thick steel hinge reinforcements welded to the doors in compliance with SDI100. Standard hinge preparation is to be 4’’ x 4’’. Lock Face Plate 4.0 mm thick steel lock face plate reinforcement with tapped holes welded to the Doors. Standard lock preparation is to be provided in compliance with ANSI A115.1 or A115.2. Infill Honeycomb core. Hardware UL listed fire rated hardware or British Standard hardware. Finish RAL (Powder Coat) Optional Construction • Louvers • Vision Panel • Finish Wooden finish (Powder Coat) Metallic finish (Powder Coat) • Infill Polystyrene core door Stiffened Door with fiberglass insulation Polyurethane core door
- [Fire Rated Steel Door](https://beteccad.com/product/fire-rated-steel-door-2/): Door Test Ratings Fire Rating : Upto 2 hours Test Standards : UL-10B / UL-10C / BS 476 part 20/22 Size Range Double door upto 8’ width x 10’ height Standard Construction Door 45 mm (1-¾’’) thick full flush construction. Galvanized steel to Zinc coating Z-22 to Z-27. Nominal door thickness 18 ga. Deep end channels at top and bottom of door for lasting integrity. Hinge 4.5 mm thick steel hinge reinforcements welded to the doors in compliance with SDI100. Standard hinge preparation is to be 4’’ x 4’’. Lock Face Plate 4.0 mm thick steel lock face plate reinforcement with tapped holes welded to the Doors. Standard lock preparation is to be provided in compliance with ANSI A115.1 or A115.2. Infill Rockwool. 42mm thickness and 100kg/m³ density. Hardware UL listed fire rated hardware. Finish RAL (Powder Coat) Optional Construction • Louvers • Vision Panel • Finish Wooden finish (Powder Coat) Metallic finish (Powder Coat) • Infill Polystyrene core door Stiffened Door with fiberglass insulation Polyurethane core door
- [Fire Rated Steel Door](https://beteccad.com/product/fire-rated-steel-door/): Door Test Ratings Fire Rating : Upto 2 hours Test Standards : BS 476 part 20/22 Size Range Single door upto 4’ width x 10’ height Standard Construction Door 45 mm (1-¾’’) thick full flush construction. Galvanized steel to Zinc coating Z-22 to Z-27. Nominal door thickness 18 ga. Deep end channels at top and bottom of door for lasting integrity. Hinge 4.5 mm thick steel hinge reinforcements welded to the doors in compliance with SDI100. Standard hinge preparation is to be 4’’ x 4’’. Lock Face Plate 4.0 mm thick steel lock face plate reinforcement with tapped holes welded to the Doors. Standard lock preparation is to be provided in compliance with ANSI A115.1 or A115.2. Infill Rockwool. 42mm thickness and 100kg/m³ density. Hardware UL listed fire rated hardware or British Standard hardware. Finish RAL (Powder Coat) Optional Construction • Louvers • Vision Panel • Finish Wooden finish (Powder Coat) Metallic finish (Powder Coat) • Infill Polystyrene core door Stiffened Door with fiberglass insulation Polyurethane core door
- [AP B-42 Series](https://beteccad.com/product/ap-b-42-series/): Standard Construction Galvanized Steel Frame 0.7 mm aluminum sheet. Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue Fabric finish Guilford Acoustic Fabric Panel thickness 50 mm Panel edge Square Mounting Galvanized Z Clips Optional Fittings Panel thickness 25 mm Acoustic infill Fiberglass with 48 kg/m³ density with 50 mm thickness Finish Guilford Style 2100 (other fabrics available as specified) Panel Edges Radius, Mitered or Beveled Edges Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm Applications House of workship Broadcast and recording studios Theaters and Auditoriums Teleconferencing and Video conferecing rooms Note: Maximum single module construction - 1 meters x 1 meters Multiple module available with mullion.
- [AP B-41 Series](https://beteccad.com/product/ap-b-41-series/): Standard Construction Galvanized Steel Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet. Panel thickness 100 mm Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue Finish Mill finish Optional Fittings Panel thickness 50 mm Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm Applications Around noisy equipment Rooms and booths Air Handling units and plenums Note: Maximum single module construction - 1 meters x 1 meters Multiple module available with mullion.
- [AL B-30 Series- AMCA](https://beteccad.com/product/al-b-30-series-amca/): Standard Construction Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet . Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue Finish Mill finish Optional Fittings Perforated sheet Aluminum 0.9 mm thick Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness Screen G.I Steel 0.4 mm thick. S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm
- [Acoustic Louver B-20 Series- Double Bank AL-ADB/GDB-20-300/450/600-A/B](https://beteccad.com/product/acoustic-louver-b-20-series-double-bank-al-adb-gdb-20-300-450-600-a-b/): Standard Construction Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet . Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue. Finish Mill finish Optional Fittings Perforated sheet Aluminum 0.9 mm thick Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness Screen G.I Steel 0.4 mm thick. S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm
- [AL B-20 Series](https://beteccad.com/product/al-b-20-series/): Standard Construction Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet . Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue. Finish Mill finish Optional Fittings Perforated sheet Aluminum 0.9 mm thick Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness Screen G.I Steel 0.4 mm thick. S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm
- [Acoustic Louver B-10 Series- Double Bank AL-ADB/GDB-10-300/450/600-A/B](https://beteccad.com/product/acoustic-louver-b-10-series-double-bank-al-adb-gdb-10-300-450-600-a-b/): Standard Construction Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet. Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue. Finish Mill finish Optional Fittings Perforated sheet Aluminum 0.9 mm thick. Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness. Screen G.I Steel 0.4 mm thick. S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm
- [AL B-10 Series- AMCA](https://beteccad.com/product/al-b-10-series-amca/): Standard Construction Frame 1.2 mm aluminum sheet. Blades Double skin blade type with outer face 0.7 mm aluminum sheet and Inner perforated face 0.9 mm galvanized steel sheet. Acoustic infill 48 kg/m³ density rockwool covered with black glass tissue. Finish Mill finish Optional Fittings Perforated sheet Aluminum 0.9 mm thick. Insulation Fiberglass with 48 kg/m³ density with 50 mm thickness. Screen G.I Steel 0.4 mm thick. S-3 SS Bird screen S-10 SS Fly screen Finish Available with RAL powder coating, please specify color. Supports G.I / Al angles. Optional Construction Frame : Thickness up to 2 mm Blade : Thickness up to 2 mm
- [QFD-SB-F-D-30-A-R](https://beteccad.com/product/qfd-sb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SB-F-D-30A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SGB-F-D-30-A-R](https://beteccad.com/product/qfd-sgb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SGB-F-D-30A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GSB-F-D-30-A-R](https://beteccad.com/product/qfd-gsb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick stainless steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GSB-F-D-30A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GB-F-D-30-A-R](https://beteccad.com/product/qfd-gb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-D-30A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SB-F-30-A-R](https://beteccad.com/product/qfd-sb-f-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SB-F-30-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SGB-F-30-A-R](https://beteccad.com/product/qfd-sgb-f-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SGB-F-30-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GSB-F-30-A-R](https://beteccad.com/product/qfd-gsb-f-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel . Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-30-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GB-F-30-A-R](https://beteccad.com/product/qfd-gb-f-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-30-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SB-F-D-20-A-R](https://beteccad.com/product/qfd-sb-f-d-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SB-F-D-20 A/R UL555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [MFD-SGB-F-D-30-A-R](https://beteccad.com/product/mfd-sgb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Thermal Response Device (TRD) 165°F. Fusible Link 165°F (74°C) Actuator Honeywell (24V AC, 120V AC, 230V AC). Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Limit Switches For BMS open / close indication. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open / close visible indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model :MFD-SGB-F-D-30-A/R UL 555 Damper meets the required standards of SMACNA,NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view) Note : FC : Fail Close in the event of Fire Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [MFD-SB-F-D-30-A-R](https://beteccad.com/product/mfd-sb-f-d-30-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Thermal Response Device (TRD) 165°F. Fusible Link 165°F (74°C) Actuator Honeywell (24V AC, 120V AC, 230V AC). Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Limit Switches For BMS open / close indication. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open / close visible indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MFD-SB-F-D-30-A/R UL 555 Damper meets the required standards of SMACNA,NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view) Note : FC : Fail Close in the event of Fire Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GB-F-20-A-R](https://beteccad.com/product/qfd-gb-f-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F (74°C) Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open / close visible indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-20 A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GSB-F-20-A-R](https://beteccad.com/product/qfd-gsb-f-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F (74°C) Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GSB-F-20-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SGB-F-20-A-R](https://beteccad.com/product/qfd-sgb-f-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F (74°C) Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SGB-F-20-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GB-F-D-20-A-R](https://beteccad.com/product/qfd-gb-f-d-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-D-20 A/R UL555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SB-F-20-A-R](https://beteccad.com/product/qfd-sb-f-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick Stainless Steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SB-F-20-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-SGB-F-D-20-A-R](https://beteccad.com/product/qfd-sgb-f-d-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick stainless steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-SGB-F-D-20 A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [QFD-GSB-F-D-20-A-R](https://beteccad.com/product/qfd-gsb-f-d-20-a-r/): UL-555 Test Ratings Fire Rating : 1½ hrs. Max Velocity : 2000 fpm Max Operating Pressure: 4 in. w.g (1000 pa) Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter stainless steel shaft. Spring Mild steel Spring ( 30lb). Fusible Link 165°F Operator Manual quadrant. Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open, close visible Indicator. Transitions (R) Neck adapter for round duct connections.   Model : QFD-GB-F-D-20 A/R UL555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.   Note : * Standard Fusible link temperature is 165°F Above 165°F available upon customer request.
- [MFD-GB-31-A-R](https://beteccad.com/product/mfd-gb-31-a-r/): UL-555 Test Ratings Fire Rating : 3 hrs Standard Construction Frame 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Blades Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm - 1.7 mm) thick galvanized steel. Jamb Seals Stainless steel. Jack Shaft 12 mm diameter Galvanized steel shaft. Thermal Response Device (TRD) 165°F. Actuator Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC). Sleeve Minimum 0.9 mm, single section is field or factory installed. Multiple section is factory installed. Sleeve thickness as per NFPA table 3-4.6.3. Bushes Fire resistant bronze bush. Limit Switches For BMS open / close indication. Optional Fittings Retaining Angles 1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm). Blade Seals Silicon rubber blade seals. Indicator Externally mounted open / close visible indicator. Push Button For manual reset of damper. Transitions (R) Neck adapter for round duct connections. Junction Box Model : MFD-GB-31-A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL. Actuator location standard: Left side from rear view (Jack shaft view) Note : FC : Fail Close in the event of Fire Optional Construction (UL Certification N/A) Frame : Stainless Steel 16 gauge (304/316L) Blade : Stainless Steel 16 gauge (304/316L)