Butterfly Backdraft Dampers prevent the flow of outside air into a house through ducting when either an exhaust fan or intake is off. These sensitive butterfly dampers will accomplish this with minimal effect on the exhaust stream while providing a good seal against backdrafts.
Additional Information About our Backdraft Duct Dampers
Backdraft dampers prevent air leakage in your inline fan setup. These backdraft dampers are made out of steel and are designed for vertical or horizontal mounting, made of galvanized steel, and have lightweight aluminum damper blades The backdraft dampers are easy to install and are an important part of installing a duct fan system for kitchen, bath and other applications. These dampers install inside the circular ducting to prevent a backdraft of air when the fans are switched off. The backdraft shutters are available to fit 4", 5", 6", 8",10",12" and 14" ducting. These inline backdraft dampers ship via UPS Ground for normal delivery or FedEx for 2nd or Next Day Delivery.
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