Vent Cap For Nominal Duct Diameter 6 in Gas Appliance Category Category I Category II Category III Category IV Material Steel Product Type Vent Cap Material Thickness Not Applicable Maximum Temperature Rating Not Applicable Standards CSA Finish Galvanized Color Silver Overall Height 6 1/2 in Shape Cap Connection Type Press Fit Overall Width 12 3/8 in Material Grade Not Applicable Minimum Pressure Rating Not Applicable Screen Included No