4" x 12" Aluminum Alloy / Galvanized Steel Double Wall Round Adjustable Sheet Metal Gas Vent Pipe - SureLock, Twist-Lock

440060 MFG #: 4M12A
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Double-Wall Gas Vent for Approved Category I Natural Gas or Propane-Fired Appliances, Gas, Furnace, Heater, Fireplaces and Boiler in Accordance with NFPA 211, Standards for Chimney, Fireplace, Vent and Solid-Fuel Burning Appliances and NFPA 54, the National Fuel Gas Code; Made in USA
Sheet Metal Gas Vent Pipe; Type Double Wall, Round, Type B Gas Vent, Adjustable; Size 4 Inch; Length 12 Inch; End Type Twist-Lock x Twist-Lock; Material Thickness 0.012 Inch (Inner Wall), 0.018 Inch (Outer Wall); Material Aluminum Alloy/Galvanized Steel; Temperature Rating 530 Deg F; Applicable Standard UL 441, NFPA 54/211