BACK DRAUGHT SHUTTER 4"

Covalin Electrical Supply Verified independent store

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For mounting between ductsThe damper is installed by sliding between two ductsCapable of functioning in both horizontal and vertical positionsWhen mounted, damper prevents back dra ft when the fan stops; temperature usage up to +50ºCAluminum blades will open when blades are exposed to pressure and will shut again when pressure dropsIts mechanical spring is sealed with a rubber (neoprene) gasket, which helps opening and shutting of the aluminum bladesCase Quantities: BDA 4" = 100, BDA 5" = 64, BDA 6" = 36, BDA 8" = 16, BDA 10" = 12, BDA 12" = 9 Model ? d H t BDA 4" 3-7/8" 3-7/16" 1/64" BDA 5" 4-7/8" BDA 6" 5-7/8" BDA 8" 7-13/16" BDA 10" 9-13/16" 5-1/16" BDA 12" 12-3/8" 5-1/16" Show more