Angle Flange Adapter, For Nominal Duct Diameter 12 in, Inlet Diameter 12 1/8 in, Material Steel, Product Type Angle Flange Adapter, Material Thickness 22 ga, Overall Length 1 1/2 in, Maximum Pressure Rating 42 in wc, Weight 3.9 lb, For Duct Height 12 in, Flange Inner Diameter 12 1/8 in, For Duct Width 12 in, Flange Outer Diameter 15 1/8 in, Inside Diameter 1/2 in, Number of Holes on Flange 8, Overall Width 12 in, Bolt Circle Diameter 14 in, Minimum Pressure Rating 2 in wc, Shape Straight