Portable Electric Salamander Heater Overall Height 25 in Overall Depth 46 in NEMA Plug Configuration Hardwired Voltage 440/480V AC 3 Phase Wattage Output 16kW/32kW/40kW Air Temp Rise 100 Degrees F Amperage 50A Frequency 60 Hz Heating Capacity 51 200 BtuH 102 400 BtuH 136 000 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