Screw Plug Immersion Heater 1 500 W Watts Sheath Material 316 SS Screw Plug Material Stainless Steel Watt Density 63 sq in Heater Voltage 120V AC 1 Phase Overall Length 14 5/16 in Control Range 60 Degrees to 250 Degrees F 1 in NPT Enclosure Type NEMA 1 Min Immersion Depth 9 1/4 in Includes Thermostat