Portable Electric Salamander Heater Overall Height 25 in Overall Depth 46 in NEMA Plug Configuration Hardwired Voltage 440/480V AC 3 Phase Wattage Output 24kW/48kW/60kW Air Temp Rise 100 Degrees F Amperage 75A Frequency 60 Hz Heating Capacity 81 864 BtuH 163 728 BtuH 204 700 BtuH Heating Method Convection Fan Forced Number of Heat Settings 3 Non-Oscillating Thermal Overheat Protection Automatic Reset Thermostat Included Unit-Mounted Indoor Only Housing Color White