This chimney pipe is designed for appliances that are tested and listed for use with a 2100°F HT chimney system, such as wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas. Features Approved for most fuel types 430-alloy stainless steel inner wall 2" clearance to combustibles ThermalTech blanket insulation eliminates hot spots Twist-lock connections for strong, secure fits Able to vent large fireplaces and building heating appliances Clean, smooth exterior finish Specifications Model COP70915 Product Size 6" x 36"