Leviton 88101 1-Gang Toggle Device Switch Wallplate, Oversized, Thermoset, Device Mount - White. All 1-Gang Oversized wallplates are 5.25" H x 3.5" W. Add 1.8125" for each additional gang. Familiar and functional, Leviton Traditional Wallplates are designed for use with Traditional Leviton devices. They represent styles and form factors that have stood the test of time. Their clean lines work in virtually any location, whether in new or retrofit construction, and they install quickly and easily.