Screw Plug Immersion Heater, 3,000 W Watts, Sheath Material Copper, Screw Plug Material Brass, Watt Density 48 W/sq in, Heater Voltage 240V AC, 1 Phase, Overall Length 19 in, Control Range 60 Degrees to 250 Degrees F, 2 in NPT, Enclosure Type Moisture Terminal, Min. Immersion Depth 11 7/8 in, Special Information Rugged Tubular Heating Element, Special Model Selections with Low Water -Off