DuraVent DuraTech 8" Inner Diameter All-Fuel Stainless Steel Chimney Pipe with Galvalume Outer Wall - 36" Length: A venting pipe with an inner diameter of 8" is required for this unit. A ceramic refractory blanket is used to insulate the DuraTech chimney system's double-wall chimney. The inner wall is stainless steel 0.020" thick, with a 0.02" galvalume exterior wall. This UL-listed pipe has an 8" inner diameter and a 10" outside diameter, allowing for a 2" clearance to combustibles. Secure twist-lock connections hold the parts together. The warranty is for a limited time only.

36 Inch length Double-wall chimney pipe for wood oil coal and gas appliances .021" galvalume outer wall and .020" stainless steel inner wall Insulated by a layer of ceramic refractory blanket Secure twist-lock connections 2" clearance to combustibles 8" inner diameter with a 10" outer diameter Limited lifetime warranty UL Listed