DuraVent DuraTech 6" Inner Diameter All-Fuel Stainless Steel Chimney Elbow Kit with Galvalume Outer Wall - 15-Degree: A vent pipe with a 6" inner diameter is required for this unit. Two galvalume double-walled elbows and one elbow strap are included with this chimney elbow kit. The elbows can be used to clear obstacles in the way of venting. The base of the elbow swivels 360 degrees, making it easier to achieve proper alignment. The double wall construction features an outside galvalume wall and an inner stainless wall, with a layer of ceramic refractory material between them, allowing for a 2" clearance to combustibles. The twist-lock mechanism is used to join the parts. The warranty on these elbows is for a lifetime.

15 Degree Elbow Double-wall chimney elbows for venting wood oil coal and gas appliances Offsets venting obstructions Swivels 360¡ at base .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 Kit includes: two (2) galvalume elbows and one (1) elbow strap Limited lifetime warranty UL Listed