Angle Flange Adapter, For Nominal Duct Diameter 4 in, Inlet Diameter 4 in, Material Steel, Product Type Angle Flange Adapter, Material Thickness 22 ga, Overall Length 1 in, Maximum Pressure Rating 42 in wc, Weight 0.9 lb, For Duct Height 4 in, Flange Inner Diameter 4 in, For Duct Width 4 in, Flange Outer Diameter 6 in, Inside Diameter 1/4 in, Number of Holes on Flange 6, Overall Width 4 in, Bolt Circle Diameter 5 1/4 in, Minimum Pressure Rating 2 in wc, Shape Straight, Outlet Diameter 4 in