Heat will gush from this oil-filled unit with 600 / 900 / 1,500-watt heating capabilities. Heating element is factory sealed in mineral oil. Oil is safely heated internally – no fumes & no flames. Thermostat maintains desired temperature with automatic on / off cycles. Seven-fin steel cabinet is fitted with wheels for easy transportation. Uses a high temperature plug. Safety Features: Auto On / Off Cycles; Internal Thermal Limit Fuse; Power & Caution Indicator Lights; Setting Range [Min]: 600 W; Setting Range [Max]: 1,500 W; Case: Seven-Fin.