Fantech 4" - 16" Spring Loaded Backdraft Damper - Fantech RSK4, RSK5, RSK6, RSK8, RSK10, RSK12, RSK14, RSK16

Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure.

Model A* B RSK 4 4 3 1/4 RSK 5 5 3 1/8 RSK 6 6 3 1/8 RSK 8 8 3 1/8 RSK 10 10 3 RSK 12 12 3 RSK 14 14 6 3/8 RSK 16 16 6 3/8 Dimensional information in inches. *) Duct connections are 1/8" smaller than duct size.