Vent Type Counter Flow, Fuel Type Natural Gas, Heating Method Fan Forced Convection, Heating Capacity Input 35,000 BtuH, Heating Capacity Output 28,000 BtuH, Heating Area 875 sq ft, Ignition Type Standing Pilot, Ignition Power Source Electric, Air Flow 240 cfm, Overall Height 72 1/2 in, Overall Width 14 1/8 in, Overall Depth 10 1/4 in, Mounting Location Wall, Mounting Type Semi-Recessed, Surface, Thermostat Included No, Venting Vented, Wall Type Single, For Use Indoors/Outdoors Indoor Only