H&C 4RYF44 4" X 4" X 4" WYE

[ "Sheet Metal Gas Vent Wye", "Type Double Wall, Round, Fixed", "Size 4 Inch x 4 Inch x 4 Inch", "End to End Dimension 12 Inch", "Material Thickness 0.012 Inch (Inner Wall), 0.018 Inch (Outer Wall)", "Material Aluminum (Inner Wall), G90 Galvanized Steel (Outer Wall)", "Applicable Standard UL", "Used On Type B Gas Vent System" ]