Eaton WD125 3-Pole 3-Wire 30-Amp 125-Volt Surface Mount Dryer Power Receptacle， Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Features heavy galvanized steel and mounting strap to resist corrosion.</li><li>Patented lay-in terminals accept up to #4 AWG</li><li>Back features concentric knockouts and an adjustable cord clamp to allow wiring from back and bottom</li><li>Features 3-Pole/4-Wiring with a Nema Standard of 14-50R with 125/250 Voltage</li><li>To be used with aluminum or copper wiring</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Dtpf%2BbZTL.jpg" noproxy>