The FAMCO BD Butterfly Backdraft Damper is used as a back draft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed. This damper works in both horizontal or vertical positions and the foam seal provides minimal air leakage. Due to its unique design and Aluminum blades, it opens easily with normal air flow and closes with gravity. Quality constructed Galvanized steel, 28 - 22 ga.

Famco Backdraft Damper, Series: BD, 8 in Size, 28 ga Galvanized Steel, Mill, Round, 7-1/4 in L

• Works for horizontal and vertical applications
• Foam seal provides minimal leakage
• It opens easily with normal air flow and closes by gravity

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Famco_BD8_Catalog.pdf
• Video Link https://youtu.be/4RmtSIqw0Ao