Electric Ceiling Panel Heater Overall Length 23 3/4 in Overall Width 23 3/4 in Overall Depth 7 in Overall Height 5 3/4 in 1 Phase Voltage 277V AC Wattage Output 2500W/3800W/5000W Housing Color Gray Heating Method Fan Forced Heating Capacity 8500/13 000/17 100 BtuH Mounting Type Recessed Thermostat Included No Air Flow 300 cfm Air Temp Rise 45 Degrees F Amperage 18.1A/13.7A/9A Frequency 60 Hz Control Type Thermostat Heater Mounting Position Vertical Burn