Matt Black Evolve 1 Gang Secondary Telephone Outlet - Black Insert About Product: Screw terminals Easy to install, supplied with fixing screws and installation instructions Used as a secondary telephone socket Screwless front plate clips on and off easily, ideal for redecorating - polycarbonate construction Shuttered socket Minimum mounting box depth 35mm This Evolve Matt Black Secondary telephone socket from British General uses a screw terminal connection, and should be used for an additional telephone point which feeds from the master telephone socket. This socket has a low profile screwless flat plate that clips on and off, making it ideal for modern interiors