Abstract: An adjustable electrical outlet box attachment for use on conventional electrical junction boxes includes a mounting plate dimensioned for mounting on a conventional electrical junction box, a collar open at the front and rear ends and disposed on the mounting plate about a central opening therein, a box frame mounted to slide forwardly and rearwardly within the collar and to contact the sidewalls of the collar, and adjustment screws mounted within the box frame to connect the frame and either the collar or the mounting plate so that when the screw is rotated in one direction, the box frame is caused to move outwardly of the collar, and when rotated in the other direction, the box frame is caused to move toward the collar.