PVC Electrical Box Extender, Extends Switch & Outlet Boxes Set Too Deep In Wall, Excellent For Remodeling, Extends Wiring Box Up To 1-1/8", 2-14" x 3-1/4", 2 Mounting Ears, No Need To Disconnect Wiring Device, Designed To Work With All Large Devices, Dimmers & GFCIs, For Use With Most Nonmetallic Wiring Boxes, Mounting Hardware Included.  Item sold by the box. 24 per box.