8" DuraTech Wall Thimble - 8DT-WT

The DuraTech Wall Thimble adjusts from a minimum of 4" to a maximum of 10", and fits between standard wall studs. To accommodate thicker walls, the telescoping pieces can be separated, and a field-fabricated extension installed. The interior trim ring is painted black. The Thimble must be installed with DuraTech Chimney pipe horizontally through the wall and extend 6" into the room beyond the interior wall. 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. See all 8" DuraTech Chimney Pipe. Additional Information: 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 1000° F flue gas temperatures, DuraTech is subjected to rigorous and stringent HT requirements of the UL standard, including one hour at 1400° F, plus three ten minute chimney fire tests at 2100° F.   Installation Instructions   Installation Instructions WARNING: This product can expose you to chemicals including Chromium, which is known to the State Of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.P65Warnings.ca.gov.