Abstract: An electrical box assembly is configured for mounting an electrical device such as an electrical wiring device. The electrical box assembly includes a box, such as a metal or non-metallic box, with an open front end having an inwardly extending shoulder forming a recess at the front end. A mounting plate is attached to the shoulder for mounting the electrical device. The mounting plate can be a metal mounting plate or made of a non-metallic material. The mounting plate has an open portion and recessed surfaces on opposite sides of the open portion. A movable mounting arm is pivotally coupled to the mounting plate on one side of the open portion to pivot between an open position and a closed position overlying the open portion.

Abstract: An electrical box assembly is configured for mounting an electrical device such as an electrical wiring device. The electrical box assembly includes a box, such as a metal or non-metallic box, with an open front end having an inwardly extending shoulder forming a recess at the front end. A mounting plate is attached to the shoulder for mounting the electrical device. The mounting plate can be a metal mounting plate or made of a non-metallic material. The mounting plate has an open portion and recessed surfaces on opposite sides of the open portion. A movable mounting arm is pivotally coupled to the mounting plate on one side of the open portion to pivot between an open position and a closed position overlying the open portion.