Screw Plug Immersion Heater, 10,000 W Watts, Sheath Material Copper, Screw Plug Material Brass, Watt Density 55.34 W/sq in, Heater Voltage 480V AC, 3 Phase, Overall Length 28 9/16 in, Control Range 60 Degrees to 250 Degrees F, 2 in NPT, Enclosure Type NEMA 1, Min. Immersion Depth 22 in, Special Information Corrosion- Electrical Wiring Hardware, Recompacted Element Bends Restore Insulation Resistance After Forming, Silicone Resin Element Seal Standard