Wiring boxes
Two-gang Old Work Boxes from Steel City Union and Bowers have combination screws and steel swing ears so they can be snugly installed on walls from 1/4-inch plywood to 5/8-inch drywall. These nonmetallic boxes can be used for applications that require two devices or additional wiring capacity. Capacity of the boxes is 32 cubic inches.
Thomas & Betts Corp.
Memphis, TN