Screw Plug Immersion Heater 1 500 W Watts Sheath Material Copper Screw Plug Material Brass Watt Density 84 sq in Heater Voltage 240V AC 1 Phase Overall Length 11 5/8 in Control Range 60 Degrees to 250 Degrees F 1 1/4 in NPT Min Immersion Depth 9 in For Use With Water Applications Includes Thermostat