Electric Convection Heater, Ceiling, Voltage 277, 60 Hz, 1 Phase, 14.4/10.8/7.2 Amps AC, 4000/3000/2000 Watts, 4/3/2 kW, Output BtuH 13,700/10,200/6800, Width 16 1/2 In, Length 20 In, Depth 5 3/4 In, Air Temp Rise 51 F, Recessed Mounting Box Dim 22 1/8x22 1/8, Neutral Grey, Built-In Features Adjustable Directional Airflow, Agency Compliance UL & CUL |