Screw Plug Immersion Heater, 5,000 W Watts, Sheath Material Copper, Screw Plug Material Steel, Watt Density 23 W/sq in, Heater Voltage 240V AC, 1 Phase, Overall Length 47 1/2 in, Control Range 100 Degrees to 550 Degrees F, 2 in NPT, Enclosure Type Moisture Terminal, Min. Immersion Depth 40 3/8 in, Special Information Rugged Tubular Heating Element, Special Model Selections with Low Water -Off