Screw Plug Immersion Heater, 1, 500 W Watts, Sheath Material Incoloy (R) 840, Screw Plug Material Stainless Steel, Watt Density 90.26 W/sq in, Heater Voltage 120V AC, 1 Phase, Overall Length 12 5/8 in, 1 in NPT, Enclosure Type NEMA 1, Min. Immersion Depth 9 1/4 in, Special Information Corrosion-Resistant Electrical Wiring Hardware, Recompacted Element Bends Restore Insulation Resistance After Forming, Silicone Resin Element Seal Standard, For Use With Corrosive Materials, Includes Screw Plug. This item has been restricted from sale in the following state (s): []