Machine Adapter For Nominal Duct Diameter 4 in Inlet Diameter 3 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 0.75 lb For Duct Height 4 in For Duct Width 4 in Overall Width 4 in Minimum Pressure Rating 2 in wc Shape Straight Outlet Diameter 4 in Overall Diameter 4 in Overall Height 4 in End Type Quick-Fit Adapter Type Machine Adapter