Active Air Backdraft Damper, 12 in

Product Details Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a backdraft of air when the fans are switched off. Specifications Shipping Weight2.1 lbs. Units/pallet100 Package Dimensions1.2L x 12.9W x 5.6H Barcodes10638104007891 (GTIN) 638104007894 (UPC-A) Diameter12