DuraVent DuraTech 5" and 7" Adjustable Elbow Strap vent-elbow 79 kW) Average overall efficiency

79 kW) Average overall efficiency (dry cordwood)  64% (HHV)  68% (LHV)  Optimum overall efficiency  70% Optimum heat transfer efficiency  68% Average particulate emissions rate 1

DuraTech Attic Insulation Shield - 6DT-IS Required for installations that pass through an attic to prevent insulation and debris from accumulating near the chimney

Data Sheet

Engineered to perfection

Measurements: 14″ diameter x 7

DuraVent DuraTech 5" and 7" Adjustable Elbow Strap vent-elbow 79 kW) Average overall efficiencyWith 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