Continental Fan BDD300 12" Spring Loaded Backdraft Dampers
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Continental Fan BDD300 12" Spring Loaded Backdraft Dampers
Neoprene damper seal minimizes leakage 20 gauge steel housing, aluminum spring loaded butterfly damper blades Simple installation in any position - entire assembly inserts into duct Exterior foam gasket assures a tight seal against duct 10" & 12" models include rolled metal sleeve with center post design