End Cap For Nominal Duct Diameter 3 in Gas Appliance Category Not Applicable For Duct Height 3 in For Duct Width 3 in Inlet Diameter 3 in Material Steel Overall Length 2 1/4 in Product Type End Cap Inside Diameter 3 in Material Thickness 18 ga Weight 0.3 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 3 in Shape Cap Connection Type Clamp Together