Arlington BE4 4-Gang Box Extender, 2-Hour Fire Rated, Up to 1-1/2"

Arlington Box Extender, 4 Gangs, 4.188 in Length, 7.749 in Width, Wall Mount, Plastic, White.

Arlington non-conductive box extenders extend set back metal or non-metallic electrical boxes up to 1-1/2 in, the easy way. They work with any 1-gang device and most steel and non-metallic outlet boxes and provide a level, fully supported wiring device that's flush with the wall surface. In steel boxes they prevent arcing and shorting by creating a barrier between the box and device screws.