Shallow design for maximum wiring room. Large head terminal screws accept up to No. 10 copper wire, Quickwire push-in terminals for speedy installation. Double-wire power contacts for maximum conductivity and plug retention, captive mounting screws. Break-off plaster ears, break-off fins for 2-circuit conversion. 15A/125V, NEMA (National Electrical Manufacturers Association) 5-15R. Limited 2-year warranty. UL (Underwriter's Laboratories) listed.