Water Heater Element, Element Mount Type Flange, Element Type Bolt On, Insert Length 13.75 in, Operating Voltage 240V AC, Power Consumption 3,500 W, Bolt Circle Diameter 2 1/2 in, Flange Height 2 1/2 in, Flange Material Steel, Flange Width 2 1/2 in, For Potable Water Use No, For Water Hardness Extremely Hard, High Lime Content, High Sulfur Content, Frequency 60 Hz, Gasket Type 1/2 in Thick Round Donut, Flat 2 1/2 in Square Composition, Includes Gasket Yes, Includes Mounting Hardware Yes