Wiring Device-Kellems Select Spec™ Twist-Lock® Locking Receptacle, 3-Phase Grounding Standard Single, 250 VAC, 20 A, 3 Pole, 4 Wires, NEMA L15-20R/WD1/WD5, Commercial/Industrial Grade, -40 to 85 deg C, Screw Terminal, Composite/Thermoplastic, Black, 1.703 in W x 1.234 in D