2 Pack, PVC Box Extender, For Single Or Multiple Gang Electrical Boxes, Excellent For Remodeling, Extends Electrical Switch & Outlet Boxes Set Too Deep In Wall Up To 1" Maximum, Works With Most Non-Metallic Single & Multiple Gang Electrical Wiring Boxes & Devices, Includes Two 2"W x 1.25"D x 4.25"H Extenders & Four #6-32 Mounting Screws, UL Listed 655A Extender, Complies With Nec Article 370-20.