cULus Listed|UL 103HT|ULC S604 MH7399

• Designed for appliances that are tested and listed for use with a 2100 deg F HT chimney system, such as wood stoves, fireplaces, furnaces, boilers, ranges, water heaters or other appliances fueled by wood, oil, coal or gas Allows the installer to safely and easily connect and disconnect chimney sections without mechanical fasteners Encases insulation to prevent exposure to outside elements No locking bands required Corrosion-resistant stainless steel with the smallest amount of expansion when exposed to heat Prevents hot spots from appearing which could cause a fire Thickest inner wall construction in the industry providing the best protection from creosote fires Lightweight Thermo Tech insulation makes pipe sections lighter (5 ft-lb for 6 in Dia) to allow the manufacture of 5 ft lengths, thus the installer has fewer trips up the ladder for a quick and easy installation

With a thermal tech blanket insulation encased between dual walls, DuraTech® offers the optimum in safety and performance. It keeps the outer wall of the chimney cool, while ensuring high flue gas temperatures for optimum draft performance. The inner wall is 25% thicker than competitive chimneys for an extra margin of safety. No locking bands or mechanical fasteners required. DuraTech's sleek 1 in wall design provides for easy installations through 16 in on center framing. For tight installations, a reduced clearance square ceiling support box is available (6 in Dia DuraTech® only). Designed for normal, continuous operation at 1000 deg F flue gas temperatures, DuraTech® is subjected to rigorous and stringent high temperature requirements of the UL standard, including 1 hr at 1400 deg F, plus three 10 min chimney fire test at 2100 deg F.