DuraVent DuraTech 5" - 6" Black Square Trim Collar for Round Support Box btu24000 You can trust and enjoy

You can trust and enjoy the service of your gas furnace more when it is properly vented

5DT-18 Inner Diameter

Includes removable tee cap for easy chimney cleaning or inspection

For use with Boulevard Direct Vent Contemporary Linear Fireplaces

FOR 50-INCH TVS AND SMALLER

DuraVent DuraTech 5" - 6" Black Square Trim Collar for Round Support Box btu24000 You can trust and enjoyWith 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