Description Videos Product Reviews BES1 Single Gang Box Extender Adds 5/8″ Shallow Box Extender Adds 5.3 cubic inches to existing box volume No need to remove existing shallow box Allows you to install larger devices such as GFCIs and Speaker Volume Controls in shallow boxes Finishes with any standard or mid-size wall plate Paintable Videos Hide Videos Show Videos Arlington BES1 Installation Video how to make an electrical box larger so a dimmer will fit 0 Reviews Hide Reviews Product Reviews