Screw Plug Immersion Heater 3 000 W Watts Sheath Material Steel Screw Plug Material Steel Watt Density 21 sq in Heater Voltage 240V AC 3 Phase Overall Length 23 3/8 in Control Range 60 Degrees to 250 Degrees F 2 in NPT Enclosure Type NEMA 1 Min Immersion Depth 18 in Includes Thermostat