Flange Adapter, For Nominal Duct Diameter 12 in, Inlet Diameter 12 3/4 in, Material PVC, Product Type Angle Flange Adapter, Material Thickness 0.3 in, Overall Length 16 in, Maximum Pressure Rating 10 in wc, Weight 2.5 lb, Flange Inner Diameter 12 3/8 in, Flange Outer Diameter 16 in, Inside Diameter 12 3/4 in, Number of Holes on Flange 16, Overall Width 16 in, Bolt Circle Diameter 14 3/8 in, Minimum Pressure Rating Not Applicable, Shape Straight, Outlet Diameter 16 in, Overall Diameter 16 in