Arlington FER102 Expandable Outlet Box, Mounting Wing Screws for Old Work 2-Gang, 10-Pack includes 10 (2-Gang) boxes - come ready to install with mounting wings as a two-piece two-gang box Includes mounting wings to securely mount box onto drywall with existing construction Use in conjunction with FER102C center sections when a larger box is needed, to build up to a ten-gang box Just snap together units to create your sections, save on time and money with your projects With the center sections you can forget the time consuming way of making multiple gang steel boxes out of several single-gang boxes