6" Spring Loaded Backdraft Damper

APPLICATIONS

BDD backdraft dampers improve comfort and save energy and money by keeping unwanted air from entering a duct when a fan is not operating. This can be very beneficial in keeping outside air from being drawn into a room, or preventing the reversal of indoor air when a number of fans are joined to exhaust through a common duct. Utilizing a backdraft damper in this manner prevents air that is being exhausted from one area from backing up into other areas connected by the common duct.

FEATURES & BENEFITS

• Neoprene damper seal minimizes leakage
• 20 gauge steel housing, aluminum spring loaded butterfly damper blades
• Gasket designed to withstand temperatures from -22 F to 180 F
• Requires from 0.04 to 0.08 in. wg pressure to open
• Simple installation in any position – entire assembly inserts into duct
• Exterior foam gasket assures a tight seal against duct
• Stamped metal sleeve with center pin design