DuraVent DuraTech 5" - 6" Black Square Trim Collar for Round Support Box d17.12 MODERN TECHNOLOGY WITH CLASSIC INSERT

MODERN TECHNOLOGY WITH CLASSIC INSERT FEATURES

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DuraVent DuraTech 5" - 6" Black Square Trim Collar for Round Support Box d17.12 MODERN TECHNOLOGY WITH CLASSIC INSERTWith 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