Blanket Drum Heater Current Rating 8.7 A For Container Capacity 55 gal Operating Voltage 115V AC Watt Density 5.7 W/sq in Watts 1 000 W Drum Diameter - Maximum 22 1/2 in Includes Adjustable Thermostat Cord Set with 3 Prong Molded Plug Operating Temperature - Maximum 400 Degrees F Operating Temperature - Minimum 50 Degrees F