Surface mount, range and dryer. Meets all UL 498 requirements. For use with copper or aluminum wire, 75 degrees Celsiusrated terminals. Lay-in terminals accept up to number 4 wire. 3/4" and 1" concentric knockouts and adjustable cord clamp allow for wiring from bottom or back. Size: 2-1/2" x 4-3/4" x 2-3/32". NEMA 6-50. Plug for this receptacle - Orgill sku (640.9478).