Hubbell ML500GCN 1-Gang Weatherproof In-Use Cover, Expandable, EXTRA DUTY®Product details Revolutionary design expands from 1 in. to 3 in. for In Use needs Ultra rugged polycarbonate & synthetic neoprene rubber that will not dry rot, crack or deteriorate in sunlight Quick Fit keyhole mounting system allows installation under a minute Universal Fit Adapter System Technology (U Fast) for 16 in 1 custom device configurations, comes pre configured for GFCI 100% paintable surface Clear window allows for quick easy visual