Galvanized Steel Construction-Electric Drive
Sales EnquiryCatalogue



Tunnel Ventilation Damper –BRE-UK


Model TVD-GB-40D-E
Construction Galvanized Steel
Blade Aerofoil Blade
Fire Rating 4 Hrs. As per BRE
Leakage Class-I as per UL-555S( Under Process)
Max Velocity 3000FPM
Max Pressure 8” w.g
Airflow Direction Either
TRD 165 ° F (74 °C)
Installation V/H
Drive Electric

BETEC CAD.‘s B-40 Series Tunnel ventilation damper is high performance BRE UK with 4 Hrs. fire rated and UL-555S classified Class-I leakage rating. May be installed vertically or horizontally (with blades running horizontally) and is rated for air flow in either direction.

Size Limitation
Module Width x Height Mounting Position
Single Max X Max. 12″ x 12″ V/H
Single Max X Max. 40″ x 48″ V/H
Single Max X Max. 80″ x 96″ V