Over The Side Immersion Heater, 9,000 W Watts, Sheath Material Incoloy(R), Watt Density 40 W/sq in, Heater Voltage 240V AC, 3 Phase, Overall Length 31 1/8 in, Enclosure Type Moisture Terminal, Min. Immersion Depth 31 1/8 in, Height 36 in, Special Information Easy Installation and Removal, Rugged Tubular Heating Element Construction, Top-Mounted Heaters for Tanks and Drums, For Use With Cleaning and Rinsing Tanks, Oil Storage Tanks, Includes Wall Riser Tube