Screw Plug Immersion Heater, 1,000 W Watts, Sheath Material 316 Stainless Steel, Screw Plug Material Stainless Steel, Watt Density 91.51 W/sq in, Heater Voltage 120V AC, 1 Phase, Overall Length 11 7/16 in, Control Range 60 Degrees to 250 Degrees F, 1 in NPT, Enclosure Type NEMA 1, Min. Immersion Depth 6 3/8 in, Special Information Corrosion- Electrical Wiring Hardware, Recompacted Element Bends Restore Insulation Resistance After Forming, Silicone Resin Element Seal Standard