Arlington Industries FSC405R-1 Low-Profile Shallow Sconce Box for 1/2-Inch and 5/8-Inch Walls, 4-Inch, Black, 1-Pack Installs into existing 1/2-inch or 5/8-inch wall with 4-inch hole saw Time-saving solution to retrofit installations that have shallow wall cavities or obstructions running behind the wallboard Includes NM cable connector, installation screws and mounting wings for 1/2-inch or 5/8-inch drywall 4-inch diameter box accommodates most sconce light canopies, completely hiding the box Unit is UL Listed for a complete and professional installation - Made in USA