Bracket clips on any stud. Securing the bracket to the stud ensures that the box will not move. The box snaps into place on the bracket, square and secure every time. Then turning the screw clockwise or counterclockwise adjusts the box in or out to make it flush with any wall covering. Easily removable to allow inner wall access or to switch between single gang and double gang boxes. Accommodates high and low voltage applications. Pre-installed ground lug. Flat bottom cable priouts. UL listed.