ISO 9001 : 2008

CERTIFIED

Acoustic Louver B-20 Series- Double Bank AL-ADB/GDB-20-300/450/600-A/B

Models : AL-AB-20-100A; AL-ADB-20-300A
Single Bank Depth (D) : 100 to 450 mm; Double Bank Depth (D) : 300 to 600 mm
Type : A – Hole Perforations 3 mm*; B – Hole Perforations 5 mm

 

BETEC CAD. B-20 Series Acoustic louvers provide significant broadband attenuation to low velocity openings while minimizing line of sight through the opening.

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

Downloads

Request for Quotation

  • MSFD-GB-31C3-A-R

    Galvanized construction, 3-hour, Class 3 leakage at 350° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
    Read more
  • MSFD-GB-31C2-A-R

    Galvanized construction, 3-hour, Class 2 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
    Read more
  • MSFD-GB-31C1-A-R

    Galvanized construction, 3-hour, Class 1 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
    Read more