DuraVent DuraTech 5" Black Round Ceiling Support Box h21.25 Premium design for long-term durability

Premium design for long-term durability

Pan Width 22”

16-5/16" Framing Height

8-Inch Flue Adaptor

Heat-resistant and durable

DuraVent DuraTech 5" Black Round Ceiling Support Box h21.25 Premium design for long-term durabilityWith 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