Knightsbridge Screwless Telephone Master Socket -Matt Black with Chrome Shutter - SF7300MB

"ML Knightsbridge's matt black screwless SF7300MB wiring accessories feature a screwless slim plate design with just a 4.3mm projection. The range all feature matching metal rockers and an integral gasket to prevent moisture transfer between the wall and plate. The entire range is constructed from premium grade components. The master socket contains a surge arrestor and an R/C circuit filter these are used by your service provider to get a fixed value resistance when they run line checks. Standard BT type socket with screw type terminals. Features • Master BT type socket • Screw terminals. • Screwless low profile design with built in gasket. • Certified to BS 5733 • Minimum mounting box depth"