Wiring Device-Kellems Twist-Lock® Flanged Inlet, 1-Phase Extra Heavy Duty Grounding Screw Mount, 125/250 VAC, 50 A, 3 Pole, 4 Wires, Industrial Grade, IP20 Enclosure, -40 to 75 deg C, Pressure Screw Terminal, Steel, Metallic, 2.17 x 3.5 x 2.62 in