Arlington LVU3W-1 Recessed Low Voltage Mounting Bracket with Paintable Wall Plate, 3-Gang, White Recessed bracket sits behind the wall to help you hide wires Adjusts to fit 1/4-Inch to 1-1/2-Inch thick wall board, paneling or drywall Our mounting brackets offer specially designed screw holes that deliver a better looking, easy to install job Includes two attachable knockouts, paintable trim plate and cover plate Wing design provides secure mounting of bracket automatically as screw is tightened