Chimney has been filling the supply and accessory needs of over 8 000 chimney sweeps hearth retailers masons and contractors for over 25 years. Chimney has the privilege of serving over 80% of the chimney professionals in America.Founded by Robert Daniels Sooty Bob in 1978 Chimney has grown from a one-man operation to a national network of six warehouses and a manufacturing plant. From its headquarters in Fairfield Iowa Chimney plays a major role in providing for the Chimney industry. Specifications This product requires: 2 air clearance to combustibles. Temp Ratings: 1000°F Continuous Burn (UL 103HT) 2100°F Intermittent Burn (UL 103HT) Material Specifications: Outer Wall: 304 Stainless Steel (Brushed) Inner Wall: 304 Stainless Steel Insulation: 1 Mineral Fiber Connection Specs: Joint/Connection Overlap: 1-1/2 Joint/Connection Type: Twist-Lock Misc: Supported Fuels: Wood : Lifetime- SKU: CPPF2335