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 2000W/3000W/4000W, Heating Method Fan Forced, Heating Capacity 6800/10,200/13,700 BtuH, Smart Connectivity No Connectivity, Thermostat Included No, Mounting Location Ceiling, Mounting Type Surface, Frequency 60 Hz, Air Flow 283 cfm, Amperage 7.2A/10.8A/14.4A, Air Temp. Rise 42 Degrees F, Control Type Mechanical Selector Dial