Backdraft damper, horizontal mount, Model BD-90, 8 In Sq, No Flange, Performance up to 1,500 ft/min
Greenheck Product # BD90-8X8
The BD-90 is a horizontal mount backdraft damper designed to allow vertical airflow up and prevent reverse airflow. The dampers are opened by air pressure differential and closed by gravity. The damper features a flangeless, galvanized steel frame and aluminum blades.
- AMCA certified for Air Leakage and Air Performance
- Width and height furnished approximately 0.125 in. under size