DuraVent DuraTech 7: Inner Diameter All-Fuel Stainless Steel Chimney Elbow Kit with Galvalume Outer Wall - 30-Degree : A vent pipe with a 7" inner diameter is required for this unit. Don't let problems with venting or obstacles deter you from finishing your job! The DuraTech Chimney Elbow Kit is for double-wall chimney elbows that are used to vent wood, coal, and gas appliances. The base swivels 360 degrees to assist you in maneuvering around any impediment. The stainless steel construction assures that this elbow will last a long time, and the tight twist lock connections enable a secure connection without the use of external equipment. With the DuraTech Chimney Elbow Kit, you can complete your chimney pipe job on schedule.

30 Degree Elbow Double-wall chimney elbows for venting wood oil coal and gas appliances Offsets venting obstructions Swivels 360 degree 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 7" inner diameter with a 9" outer diameter Kit includes: two (2) galvalume elbows and one (1) elbow strap Limited lifetime warranty UL Listed