Whole house fans, exhaust and ventilation fans and Indoor Air Quality

10" Butterfly Damper SKU: AL-99027 Backdraft damper with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure. Fits 10" Round Duct . 20 gauge galvanized steel housing . Aluminum spring loaded butterfly damper blades . Damper seals against EDPM rubber gasket in closed position for minimal leakage . Gasket designed for use in temperatures from - 22°F  to 180°F . Require from 0.04 to 0.08 inches W.G. to begin to open . May be installed in any position. . Simple installation - entire assembly inserts into duct . Exterior foam gaskets assure a tight seal against interior surface of duct Check out all our energy savings products at www.tamtech.com Shipping within the Continental U.S., all others call 800.222.5932 for quote. Have a PayPal account? Choose Bill Me Later and stretch your payments. Price:  $57.00 ea. Shipping:  $15.00 Quantity