DuraVent DuraTech 7" x 12" Black Double-Wall All-Fuel Chimney Pipe btu39000 plus it has some flexibility

plus it has some flexibility to allow you to conform to different placement situations and different pipe setups

On-demand heat with two heat settings

Sliding Access Door conceals standard 20 lb

even in areas with high winds

DuraVent DuraTech 7" x 12" Black Double-Wall All-Fuel Chimney Pipe btu39000 plus it has some flexibilityWith 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