TayMac was first to develop the while-in-use weatherproof cover and revolutionized the safety standard for weatherproof covers. Revolutionary patented design expands from 1 - 3 in for in-use needs Ultra rugged polycarbonate and synthetic neoprene rubber that will not dry rot, crack or deteriorate in sunlight Patented quick-fit keyhole-mounting system allows installation in under a minute Patented universal fit adapter system technology (U-Fast) for 16-in-1 custom device configurations, comes pre-configured for GFCI 100% paintable surface