Abstract: An improved mounting bracket is closed which can be used to selectively support both 4 inch square electric boxes and 4{fraction (11/16)} inch square electrical boxes such that vertical movement of either type of electrical box is limited. The mounting bracket is preferably a one-piece, unitary member stamped from sheet metal. The mounting bracket has a top support rail, a bottom support rail and a pair of mounting ends coupling the support rails together to define a large, elongated central cut-out portion. An electrical box and its associated cover may be mounted between two wall studs by first attaching the mounting bracket of the present invention to the wall studs. The open front end of the box is then placed flush against the rear surface of the bracket such that a top portion of the box contacts the bottom rail of the bracket.