DuraVent DuraTech 7" - 8" Storm Collar w137.25 Model DVX42 Input BTU/Hr Maximum

Model DVX42 Input BTU/Hr Maximum 37

Cuttable faceplate

Are Tungsten gas heaters weather resistant

The manufacturer

5 lbs of small “black’ bead fireglass ‐ 1 sq

DuraVent DuraTech 7" - 8" Storm Collar w137.25 Model DVX42 Input BTU/Hr MaximumWith 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