DuraVent DuraTech 7" x 11" Black Square Ceiling Support Box w27.875 00 Product Weight (lb) 30

00 Product Weight (lb) 30

Remember never to leave your fireplace burning if unattended

Copper Crushed Tempered Fire Glass

Not painted

DuraVent DuraTech 7" x 11" Black Square Ceiling Support Box w27.875 00 Product Weight (lb) 30With 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