End Cap with Screen, For Nominal Duct Diameter 18 in, Gas Appliance Category Not Applicable, For Duct Height 18 in, For Duct Width 18 in, Inlet Diameter 18 in, Material Steel, Overall Length 1 7/8 in, Product Type End Cap, Inside Diameter 18 in, Material Thickness 20 ga, Weight 1.75 lb, Maximum Pressure Rating 42 in wc, Maximum Temperature Rating 390 Degrees F, Seal Material Nitrile, Standards Not Applicable, Finish Galvanized, Color Silver, Overall Height 18 in, Shape Cap