End Cap For Nominal Duct Diameter 20 in Gas Appliance Category Not Applicable For Duct Height 20 in For Duct Width 20 in Inlet Diameter 20 in Material Stainless Steel Overall Length 1 7/8 in Product Type End Cap Inside Diameter 20 in Material Thickness 20 ga Weight 5.45 lb Maximum Pressure Rating 42 in wc Maximum Temperature Rating 1 100 Degrees F Seal Material Nitrile Standards Not Applicable Finish Not Applicable Color Silver Overall Height 20 in Shape Cap