DuraVent DuraTech 12" Inner Diameter All-Fuel Stainless Steel Chimney Pipe with Galvalume Outer Wall - 36" Length: A venting pipe with an inner diameter of 12" is required for this unit. Chimney pipes should be long-lasting and versatile, allowing you to utilize them for a variety of purposes while also guaranteeing that they are not readily destroyed. DuraTech's double walled pipe features simple twist locking connections for quick and easy installation. Only a 2" clearance from combustibles is required, making this a simple and effective way to create a vent system even in confined locations.

36 Inch length Double-wall chimney pipe for wood oil coal and gas appliances .029" galvalume outer wall and .027" stainless steel inner wall Insulated by a layer of ceramic refractory blanket Secure twist-lock connections 2" clearance to combustibles 12" inner diameter with a 14" outer diameter Limited lifetime warranty UL Listed