• Finishing Collar New integrated collar with adapter, fits into the female end of the chimney pipe to provide a decorative black finish Use on chimney pipe that is suspended with the roof support system or on pipe that is passing through a wall thimble Provides proper connection to DVL or DuraBlack No other adapter is needed 2 in clearance to combustibles

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 one hour at 1400 deg F, plus three ten min chimney fire test at 2100 deg F.