cULus to UL 103 HT|cUL S604 (MH7399)

• Trim Collar 2 in clearance to combustibles Lightweight insulation Conceals the gap between the round ceiling support box and the ceiling cut-out

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. Designed for normal, continuous operation at 1000 deg F flue gas temperatures, DuraTech is subjected to rigorous and stringent high temperature requirements of 1 hr at 1400 deg F, plus three 10 min chimney fire test at 2100 deg F.