Power Receptacle, Black, 4 Awg Compatible Wire Size, Socket Connection Type, 50 A Current Rating, Made In Usa, Galvanized Steel (Mounting Strap);Glass-Reinforced Nylon (Body) Material, Flush Mount Mounting Type, Nema 14-50R Nema Rating, 3 - Poles, 4 - Wires, 1 CT;12 PK Package Quantity, Power Receptacle Receptacle Type, Back Features Concentric Knockouts and An Adjustable Cord Clamp to Allow Wiring From Back or Bottom. (Surface) Special Features, 125/250 V Voltage Rating, 4.7 LB Weight