DuraTech Collection Galvanized Steel 36 Inch Chimney Pipe - Carton Filler with 10 Inch Inner Diameter Warranty Notice: M&G DuraVent warranty applies to this professional grade product only when installed by a trained professional installer. The DuraTech Galvanized Steel 36 Inch Chimney Pipe - Carton Filler with 10 Inch Inner Diameter is designed for appliances that are tested and listed for is used with a 1700° F rated chimney system, such as zero-clearance or masonry fireplaces, furnaces, boilers, water heaters, ranges, or other appliances fueled by oil, coal, gas, or wood. Tested to UL 103 and listed under MH 7399. Available in galvalume (GA) and stainless steel (SS) outer wall and stainless steel inner wall. Requires fastening with screws. Features: For Class A Chimney Pipe Inner Diameter: 10" Outer Diameter: 12" Length: 36" Designed for Use with Appliances Fueled by Wood, Oil, Coal, or Gas UL Listed Comes with Carton Filler for Shipping DuraVent now offers DuraTech in large diameters to vent large-scale residential fireplaces and building heating appliances. DuraTech chimney is tested and listed for continuous operation at 1000° F flue gas temperatures, one hour at 1400° F and ten minutes at 1700° F, in accordance with the UL 103 test standard. 10”-24” large diameter DuraTech is a 1” wall, all-fuel chimney system for use with wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas. Looking for Simpson Dura-Vent? You found it! Simpson Dura-Vent has changed their name to DuraVent. DuraVent is a recognized technological leader in the venting industry. Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.