Knightsbridge SF7400MB Screwless Telephone Extension Socket - Matt Black W/Chrome Shutter

Secondary or extension telephone socket are used to run additional points of the original master socket. Standard BT type socket with screw type terminals Made from high quality ultra slim, premium grade material. Complete with integral gasket. Compliant to all relevant British safety standards. Minimum mounting depth: 25mm. Dimensions: 87.5mm x 87.5mm. Supplied in retail blister with full fitting instructions. 15 year guarantee.