Extra heavy-duty back and side wired. NEMA type 5-15R. Duplex, isolated ground nickel plated brass strap with integral ground contacts. Durable thermoplastic face in an array of contemporary colours. Receptacles have a locked-in mounting strap with a self-grounding clip riveted to the strap. Hospital grade tamper-resistant receptacles include a unique shutter mechanism that opens easily for the insertion of 2 or 3 prong plugs while preventing entry by other small objects into either outlet slot. Hospital grade isolated ground receptacles protect sensitive electronic equipment and eliminate electromagnetic interference by providing a separate path to ground. Power Indication™ meets UL 498 hospital grade identification requirements. Backed by a limited 10-year warranty.