Surface-Mount Electric Ceiling Heater, Overall Height 9 11/16 in, Overall Width 16 7/16 in, Overall Depth 5 3/4 in, Voltage 208V AC, 1 or 3 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 300 cfm, Amperage 9.6A/14.2A/19.2A, Air Temp. Rise 42 Degrees F, Control Type Mechanical Selector Dial