Specification grade blank face GFCI. Fully compliant with all latest UL 943 (4th edition) Class A GFCI, UL 498 requirements and UL 508 for motor control switch horsepower rating, including the latest self testing requirements. GFCI lock-out function protects from miswired line-load connections and GFCI circuitry damage. Compact design provides maximum wiring room. Device and wallplate mounting screws are captive, speeding installation time. Includes standard size unbreakablewallplate. 20 amp/125 volt. UL Listed.