Abstract: A flat rectangular frame for use on the outside surface of a wall. The frame has a central rectangular aperture for mounting and supporting an electrical box in a wall opening and most especially when there is no internal wall support or the opening cut in the wall is considerably larger than the electrical box. Two electrical box holders are used in combination with the frame and rest within the wall with the fingers folded down over the sides of the electrical box exerting pressure so that the retaining tabs of the electrical box engage the front surface of the frame. The method of use of the frame where it is placed over the wall opening, the holders placed inside the wall opening, the electrical box inserted through the aperture into the opening with the retaining tabs engaging the outside of the frame, and the fingers of the holders bent down over the sides of the electrical box holding it securely against the frame.