DuraTech sets the standard in performance. The ThermalTech blanket insulation in the lengths, elbows, and tees eliminates hot spots — no shifting, settling, or voids. In the event of a creosote fire, this insulation lets the chimney liner expand outward and lengthwise, eliminating buckling and loss of structural integrity.
DuraTech uses twist-lock connections and is available with stainless or galvalume outer wall. The inner liner is 430-alloy stainless steel. Outer diameters are 2" larger than the inner. When double-wall stovepipe is needed, use DuraVent DVL.
DuraTech is tested and listed to the UL 103HT Standard for use with
wood, oil, coal, and gas appliances in 5" – 8" diameters; and the UL 103 Standard in 10", 12", and 14" diameters.
Product Note: 10", 12", and 14" diameters do not have twist-lock connections. Use the provided sheet metal screws with the 10", 12", and 14" DuraTech to make a secure connection. Be careful not to penetrate inner liner.