5" x 3", 0.012"/0.018" Thk, Aluminum Alloy Inner Wall, Galvanized Steel Outer Wall, Double Wall, Sheet Metal Increaser

436821 MFG #: 3MIX5
$15.79 / ea
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Made in USA
Sheet Metal Increaser; Type Double Wall; Larger End Size 5 Inch; Smaller End Size 3 Inch; Length 6.5 Inch; Material Thickness 0.012 Inch (Inner Wall), 0.018 Inch (Outer Wall); Material Aluminum Alloy (Inner Wall), Galvanized Steel (Outer Wall); Applicable Standard UL 441, CUL, NFPA 54/211; Temperature Rating 550 Deg F; Application Gas Boiler, Fireplace, Furnace, Unit Heater and Radiant Tube Heater