Machine Adapter, For Nominal Duct Diameter 12 in, Inlet Diameter 11 7/8 in, Material Stainless Steel, Product Type Machine Adapter, Material Thickness 22 ga, Overall Length 4 in, Maximum Pressure Rating 42 in wc, Weight 2.3 lb, For Duct Height 12 in, For Duct Width 12 in, Overall Width 12 in, Minimum Pressure Rating 2 in wc, Shape Straight, Outlet Diameter 12 in, Overall Diameter 12 in, Overall Height 12 in, End Type Quick-Fit, Adapter Type Machine Adapter