Made of strong, flexible polycarbonate with reinforced ribs for stiffness, USI Electric wall plate covers last a long time due to their virtually unbreakable construction. The smooth plastic wall plates clean easily, while captive screws ensure that the screws stay attached to the wall plate. USI Electric makes a variety of UL listed wall plates that include light switch covers and outlet covers: 1, 2, 3-gang toggle wall plate: These cover a toggle light switch. 2, 3, 4-gang rocker wall plate: These cover rocker switches. Blank wall plates: These cover outlets you no longer use, eliminating safety concerns without removing the entire outlet box. Duplex wall plate: These cover duplex receptacles. Decorator wall plate: These cover decorator receptacles.