Rheem SP10552GH Resistored HWD with Screw-In 240-volt/2000-watt Element For best results, use only Rheem replacement parts for repairing your Rheem Water Heater Watt Density Classification: HWD, Input Voltage (V): 208, Input Voltage (V): 240, Wattage at 208V (W): 1500, Watt Density at 208V (W/sq. in.): 128 Wattage at 240V (W): 2000, Watt Density at 240V (W/sq. in. ): 171, Cold Resistance (ohms): 28.80, Outer Sheath Material: Copper Element Diameter (in.): .260, Element Length - Flange to Tip (in.): 7.58, Mounting Type: Threaded, Actual Thread Size - Outside Diameter (in.): 1-9/32 Thread Type Series Designation: NPSM, Configuration: Straight, Nominal Thread Size - (in.): 1, Threads per Inch: 11-1/2