The model 7100 has an exclusive secondary heat exchanger which captures heat that would otherwise be lost through the exhaust. The exchanger automatically senses when the temperature in the exhaust is warm enough and recirculates the heat into the home. The 7100's hopper capacity is 115 lbs, Adjustable BTU's up to 70,000. Room Air Grill area can be connected to home's existing duct work.
Speciafication: Width 29.5 inches, Height 37 inches (45" with legs), Depth 30.25 inches and weight 315 pounds.