Plastic in-use covers are easy to install and with gasket, mounting screws, base cover assembly and patented inserts for serve applications, such as schools and commercial buildings. 3 patented inserts for GFCI, duplex, toggle or round receptacles. 2-gang models include 6 snap-together, rotating, inserts that create 70 combinations. 1-gang covers mount vertically and horizontally. Heavy-duty polycarbonate construction. Pre-adhered gasket. Meets requirements for cold impact testing -60F.