Immersion Depth 12 in, Flange Material PTFE, Includes Brass Screw Plugs Cartridge Immersion Heater, 3,000 W Watts, Sheath Material Incoloy(R), Screw Plug Material Brass, Watt Density 130 sq in, Heater Voltage 240V AC, 1 Phase, Overall Length 12 7/8 in, Control Range 266 Degrees F, 1/2 in NPT, Min.