Back Draft Damper

Back Draft Dampers are designed to permit air to flow in only one direction. This makes them useful for applications where duct., and needs to be shut down at other times in order to prevent heat loss or backflow. Blades are supplied unlinked as standard, allowing them to open and close independently of each other. For larger units or where the application involves higher air velocities, blades can be linked. This has a damping effect, smoothing the blades motion as they are opened and closed.