DuraVent DuraTech 12" Inner Diameter All-Fuel Stainless Steel Chimney Pipe with Galvalume Outer Wall - 24" Length: A venting pipe with an inner diameter of 12" is required for this unit. Chimney pipes should be long-lasting and versatile, allowing them to be used for a number of purposes while also being resistant to harm. DuraTech's double-walled tubing has simple twist-lock connections for quick and simple installation. Only 2" of clearance from combustibles is required, making this a simple and effective way to create a vent system even in compact places.

24 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