Angle Flange Adapter For Nominal Duct Diameter 16 in Inlet Diameter 16 in Material Stainless Steel Product Type Angle Flange Adapter Material Thickness 20 ga Overall Length 5 in Maximum Pressure Rating 42 in wc Weight 11.05 lb For Duct Height 16 in Flange Inner Diameter 16 1/8 in For Duct Width 16 in Flange Outer Diameter 19 1/8 in Inside Diameter 1/2 in Number of Holes on Flange 8 Overall Width 16 in Bolt Circle Diameter 18 in Minimum Pressure Rating 2 in wc Shape Straight