Nonpressure Rated Flanged Heater 9 000 W Watts Sheath Material Incoloy(R)800 Watt Density 50 sq in Flange Size 6-1/2 in Heater Voltage 480V AC 3 Phase Overall Length 19 5/8 in Enclosure Type NEMA 1 Min Immersion Depth 17 in Flange Material Steel Includes Gasket