DuraVent DuraTech 5" Inner Diameter All-Fuel Stainless Steel Chimney Pipe - 6" Length: A vent pipe with a 5" inner diameter is required for this unit. This double-walled stainless steel chimney pipe can handle various types of fuels, including gas, coal, oil, and wood. It has a five-inch inner diameter. DuraTech manufactures this chimney pipe, and it will operate flawlessly with other DuraTech vent components. The outer wall is. 016" stainless steel, while the inner wall is .020" stainless steel. A limited lifetime warranty is included with the chimney pipe.

6 Inch length Double-wall chimney pipe for wood oil coal and gas appliances .016" stainless steel outer wall and .020" stainless steel inner wall Insulated by a layer of ceramic refractory blanket Secure twist-lock connections 2" clearance to combustibles 5" inner diameter with a 7" outer diameter Limited lifetime warranty UL Listed