9648B 8'' DuraTech 4/12 - 6/12 Roof Support Trim Collar

Use this trim collar for a 8 in roof support to conceal the gap between the chimney pipe and the ceiling cut-out. DuraTech is a double-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, and zero-clearance fireplaces that are factory-built. With a Thermal Tech blanket insulation encased between duel walls, DuraTech offers superior safety and performance. It keeps the outer wall 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. Designed for normal, continuous operation at 1000F flue gas temperatures, DuraTech is subjected to rigorous and stringent HT requirements of the UL standard, including one hour at 1400F, plus three ten minute chimney fire tests at 2100F. Diameter: 8 in. Construction Material: Painted Black Galvalume Steel. Clearance: 2 in clearance to combustibles. Listings: c-UL-us Listed to UL 103 and ULC S604 (MH7399). Wall Construction: Double Wall. Material: Galvanized Painted Black.