Flanged Immersion Heater 18 000 W Watts Sheath Material Incoloy(R)800 Watt Density 48 sq in Flange Size 3 in Heater Voltage 480V AC 3 Phase Overall Length 51 9/16 in Enclosure Type NEMA 1 Min Immersion Depth 48 in Flange Material Steel Includes Gasket