DuraVent DuraTech 5" Black Round Ceiling Support Box h21.25 8-Inch Flue Adaptor

8-Inch Flue Adaptor

Premium design for long-term durability

Heat-resistant and durable

while improving performance

16-5/16" Framing Height

DuraVent DuraTech 5" Black Round Ceiling Support Box h21.25 8-Inch Flue AdaptorWith 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. DuraTechs sleek 1" wall design provides for easy installations through 16" on