Drum Heater Current Rating 4.2 A Environment Indoor Outdoor For Container Capacity 30 gal For Container Material Type Metal For Container Type Drums Thermostat Temperature -Maximum 160 Degrees F Thermostat Temperature -Minimum 0 Degrees F Operating Voltage 230V AC Watt Density 4 W/sq in Watts 1 000 W Closure Method Spring Controller Type Digital Drum Diameter - Maximum 18 3/5 in Electrical Connection Type 5-15P Plug