FAMCO 10" Spring-Loaded Inline Butterfly Backdraft Damper (Steel)

The Inline Butterfly Backdraft Damper with Spring is used as a backdraft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed. This product is not rated for use with a dryer. 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. The Inline Butterfly Backdraft Damper with Spring comes in sizes ranging from 4 inch to 10 inch. It is quality constructed from heavy-duty galvanized steel. Sizes 4-6 inch are 28 gauge, 8-10 inch are 26 gauge. It is undersized to fit inside a round duct. The Inline Butterfly Backdraft Damper with Spring is manufactured in the United States and comes with a 1-year warranty against product defects and workmanship.