BACK DRAFT DAMPER (BDD)

Back Draft Dampers are designed to allow airflow in one direction and prevent reverse airflow. They give an effective back draft seal in ducted systems.

Airfoil’s Back Draft Damper is made from high-grade galvanised sheet metal and the butterfly blades are made from lightweight aluminium. They are held in the closed position with low resistance steel springs. The airflow from the fans open the blade when the system is active, then close when the system is off. This stops reverse airflow or back draft through the duct.

Airfoil’s Back Draft Damper are usually used in conjunction with in-line fans, but may also be used as simple backdraft dampers in a duct system.

SKU: BDD Category: