6" inner diameter x 60-inch length section of DuraVent. Chimney liner manufactured by DuraTech. Tested and listed to UL 103HT. For wood, oil, coal, and gas, this is the standard. DuraVent DuraTech is known for its simple twist lock system. A vent pipe with a 6" inner diameter is required for this unit. You're getting one of the most durable and flexible chimney liners available when you choose a DuraTech liner. DuraVent DuraTech factory-built chimney liner, 6 Diameter x 60 Inch Long, has been tested and listed to the UL 103HT Standard for wood, oil, coal, and gas. DuraVent DuraTech is known for its simple twist-lock connections, light weight ThermaTech blanket insulation, and easy-to-use accessories. This five-foot portion is popular because it saves money and allows you to construct a more seamless installation.

6-inch inner diameter x 60-inch length section of DuraVent DuraTech factory-built chimney liner Tested and listed to UL 103HT Standard for wood oil coal and gas DuraVent DuraTech is noted for its easy twist lock connection