Heavy-duty hospital grade duplex straight blade wiring receptacle. Nylon face and body. Phosphor bronze line contact. Brass terminal screws. Brass grounding screw. Zinc-plated steel yoke. Zinc-plated steel clamp nut. Brass ground clip. Galvanized steel with riveted ground contacts strap. 1 HP rating. 20 A, 125 V, NEMA-5-20R, 2-pole, 3-wire. Back and side wired. -40 to 60..C operating temperature. Receptacles undergo the most stringent UL testing to assure continuous, safe operation in any application requiring high-abuse tolerance, including health care facilities, manufacturing plants and schools.