DuraVent DuraTech 6" Inner Diameter All-Fuel Stainless Steel Chimney Pipe with Galvalume Outer Wall - 48" Length: A vent pipe with a 6" inner diameter is required for this unit. DuraTech double wall chimney pipe is suitable for use with wood, oil, coal, and gas stoves. It's built of galvalume and stainless steel, with a layer of ceramic refractory blanket insulating it. The inner diameter of this chimney pipe is 6", and the outer diameter is 8". There must be a 2" clearance between the chimney pipe and combustibles, and the chimney pipe must have a secure twist-lock connection.

48 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 6" inner diameter with an 8" outer diameter Limited lifetime warranty UL Listed