Silicone Rubber Drum Heater, Current Rating 4.3 A, Environment Indoor, For Container Capacity 15 gal, For Container Material Type Metal, For Container Type Drums, Thermostat Temperature -Maximum 425 Degrees F, Thermostat Temperature -Minimum 50 Degrees F, Operating Voltage 115V AC, Watt Density 5.8 W/sq in, Watts 500 W, Closure Method Hook Clip, Drum Diameter - Maximum 13 1/2 in, Electrical Connection Type 3-Prong Plug