Front and will only fit the curved fronted NTE5C socket. this part to repair you faulty NTE5C master socket. These will not fit onto the older NTE5A BT sockets with the flat. This is the slightly older version with printed BT logo.
Replacment BT Openreach MK4 Faceplate filter for NTE5C Master Socket TRACKED48
Replacment BT Openreach NTE5C Master Socket Lower Faceplate Filter TRACKED48
Replacment BT Openreach NTE5C Master Socket Rear Faceplate Section TRACKED48
Replacment BT Openreach NTE5C Master Socket Rear Faceplate Section No Screws
BT Openreach MK4 Tool-Less Filtered Faceplate for High-Speed Broadband & Phone
Latest Model BT Openreach MK4 Filtered Socket for High Speed Broadband Internet