36" X 10" Aluminum Air Diverter, Extruded Aluminum Construction, 2 Sets of Individually Blades, Equalizes Flow and Control Volume at Collar Take-Offs to Registers and Grilles, Equipped with Gasket Around Frame for Positioning Firmly In Duct, Rough Opening Dims:10"W X 30"L, Dims:2"H X 9-5/8"W X 35-5/8"L, Weight:4 Lbs, Bulk, Made In Unknown.