Durable, dependable receptacles feature a permanently marked, differentiated solution that meets all necessary code requirements. The controlled receptacle marking printed on the face of the receptacle is both NEMA-approved and compliant with the National Electrical Code®, CA Title 24 and ASHRAE Energy Efficiency Standard 90.1. This clear, permanent marking helps end-users differentiate controlled receptacles from others. Corrosion resistant plated steel straps and high-strength nylon faces make these receptacles perfect for any hard use application. They feature one-piece, triple-wipe brass contacts for lasting retention. And screw-pressure-plate back wiring makes installation fast and easy.