Abstract: A cover plate assembly for a wall box mounted in an opening in a wall, the wall box having at least one pair of tabs provided with threaded holes on standard centers adapted to receive screws mounting at least one electrical circuit device within the wall box. The assembly includes a frame situated to overlie the wall surrounding the opening in which the wall box is mounted, the frame having an inside perimeter dimensioned to surround the wall box, and inwardly projecting flanges having openings to overlie the threaded electrical device mounting holes for engagement by the electrical circuit device mounting screws. The assembly also includes a safety plate overlying and fixed to each electrical circuit device, each safety plate having an outer edge dimensioned vertically to overlie the frame inwardly projecting flanges and dimensioned horizontally to cover the space occupied by the electrical circuit device to which each safety place is fixed.