Dry Lining Plasterboard Socket Box 2 gang For use with double switches Size: 32mm Powermaster 2 Gang Dry Lining Plasterboard Double Socket Box | 1523-12 The Powermaster Dry Lining Box - 32mm 2 Gang is a white bakelite box. It is for use with double switches such as a 2 gang cooker switch, as it is for use on hollow walls or cavities where extra grip is needed for the fitting to remain in place. The pack contains one 2 gang pattress box and has hassle free, easy to open polyurethane packaging. It requires standard installation tools and should only be installed by a competent, qualified person. It conforms to BS standard 5733.