Rheem SP10552MH Resistored HWD with Screw-In 240-volt/4500-watt Element<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Element - 240V/4500W Copper resistored hwd - 1 in screw-in</li><li>Watt density classification: hwd， input Voltage (V): 208， input Voltage (V): 240， wattage at 208V (w): 3380， watt density at 208V (w/sq. In.): 156</li><li>Element diameter (in.): .260， element length - flange to tip (in.): 13.50， mounting Type: threaded， ACTUAL thread size - outside diameter.): 1-9/32</li><li>High watt density</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31pNCk5pBbL.jpg" noproxy>