Drum Heater Current Rating 8.3 A Environment Indoor Outdoor For Container Capacity 30 gal For Container Material Type Metal For Container Type Drums Thermostat Temperature -Maximum 425 Degrees F Thermostat Temperature -Minimum 0 Degrees F Operating Voltage 230V AC Watt Density 4.2 W/sq in Watts 1 000 W Drum Diameter - Maximum 18 in Features Built-In Control Durable and Long Lasting Grounded Heating Element Large Uniform Heater Coverage and High Wattages Heater Length 58 1/2 in