Surface-Mount Electric Ceiling Heater, Overall Height 5 3/4 in, Overall Width 16 7/16 in, Overall Depth 5 3/4 in, Voltage 277V AC, 1 Phase, Wattage Output 2500W/3800W/5000W, Heating Method Fan Forced, Heating Capacity 8500/13,000/17,100 BtuH, Smart Connectivity No Connectivity, Thermostat Included No, Mounting Location Ceiling, Mounting Type Surface, Frequency 60 Hz, Air Flow 283 cfm, Amperage 9A/13.7A/18.1A, Air Temp. Rise 45 Degrees F, Control Type Mechanical Selector Dial, Housing Color White