Appleton U-Line N1 Series Receptacle With Mounting Box, Number Of Poles: 3, Number Of Wires: 2, Amperage Rating: 20 AMP, Voltage Rating: 125 VAC, Material: Aluminum Receptacle, High Strength Thermoplastic Polyetherimide Mounting Box, Color: Natural Mounting Box, Nema Rating: NEMA 3, 3R, 3RX, 4X, 7CD, 12, Mounting: Surface Mount With 1/2 Or 3/4 IN Feed-Thru Hub, Motor Horsepower: 1 HP, Finish: Epoxy Powder Coat Receptacle, Dimensions: 6.19 IN Height X 7.62 IN Depth, Standard: Class I, Division 1, Groups C, D, Class I, Division 2, Groups B, C, D, UL 1010 (UL 1203), UL Listed: E10784, For ECP And NCP Mating Plugs