These back draft dampers are manufactured with galvanized steel and can be mounted directly in the ventilation duct to ease the installation. The two blades have an independent hinge to prevent any malfunction. Furthermore, the dampers come with a gasket to insure a quiet and sealed operation.
- Neoprene damper seal minimizes leakage
- Requires from 0.04 to 0.08 in. with pressure to open
- Simple installation in any position – entire assembly inserts into duct
- Available in sizes from 4 to 12 in.






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