Vent Type Direct Counter Flow, Fuel Type Natural Gas, Heating Method Fan Forced Convection, Heating Capacity Input 40,000 BtuH, Heating Capacity Output 32,000 BtuH, Heating Area 940 sq ft, Ignition Type Standing Pilot, Ignition Power Source Electric, Air Flow 325 cfm, Overall Height 77 3/8 in, Overall Width 14 1/8 in, Overall Depth 11 3/4 in, Mounting Location Wall, Mounting Type Semi-Recessed, Thermostat Included No, Venting Vented, Wall Type Single, For Use Indoors/Outdoors Indoor Only