Patent ID: 8288650

Claim:
A system of electrical boxes comprising: first and second similarly sized electrical boxes each comprising: at least four sides extending from a back wall to an open front and at least two box mounting screw protrusions proximate the open front and adjacent to each of at least two opposing sides of the at least four sides, each box mounting screw protrusion comprising a hole extending toward the open front of the respective electrical box; at least two screw boss channels proximate the back wall on each of the at least two opposing sides, the at least two screw boss channels complimentary shaped and sized to receive the at least two box mounting screw protrusions when one of the first and second electrical boxes is at least partially nested within the other electrical box; and, a third electrical box comprising: at least four sides extending from a back wall to an open front and at least two box mounting screw protrusions proximate the open front and adjacent to each of at least two opposing sides of the at least four sides, each box mounting screw protrusions of the third electrical box comprising a hole extending toward the open front of the third electrical box; at least two screw boss channels proximate the back wall on each of the at least two opposing sides, the at least two screw boss channels of the third electrical box shaped to prevent receiving the at least two box mounting screw protrusions of the first and second electrical boxes.