24" length section 14" inner diameter. Tested and listed to UL 103HT standard. Use with DuraVent DuraTech chimney pipes: A venting pipe with an inner diameter of 14" is required for this unit. This section of DuraVent factory built chimney liner is a valuable component in your DuraVent DuraTech installation. This 14" inner diameter x 24" length section has been tested and listed to UL 103HT Standard for wood oil coal and gas. DuraVent DuraTech is noted for its light weight ThermaTech blanket insulation and very user-friendly accessories. Please note this section does not have twist-lock connections. Use the provided sheet metal screws to secure the connection.

24" length section 14" inner diameter Tested and listed to UL 103HT standard Designed for use with DuraVent DuraTech chimney pipes