Systems and methods for mounting electrical devices such that they appear “flush” with a finished wall. The systems include specialized back boxes, mud rings, faceplates, and other tools that are installed and used during the mounting process. The mounting process includes a specific series of steps that take place during construction and wall finishing, including that mud or other finishing material is used to both “hide” the mounting system and lock it into place The systems and methods allow for full usage of existing electrical devices such as electric outlets, light switches, and USB connectors, with an improved visual appearance over existing electrical plates that sit on top of the wall.