Straight Blade Receptacles: Type - Single Locking; Rating - Amps - 30A; Rating - Volts - 347/600V 3 PhaseY; Number of Poles - 4P; Number of Wires - 4W; Ground - Non-Grounding; NEMA - L20-30R; Mounting - Flush; Material - Nylon; Color - Black; Face OD - 1.55 in; Manufacturer Brand - Turnlok