All British Standard Night Latches will be marked with the British Standard Kitemark which means they conform to BS3621. There are 2 types of BS nightlatches, Key Egress and Keyless Egress. Key Egress locks will feature a lockable internal handle which offers additional security against slipping and is also the best option for doors with glass panels. These are not suitable for communal entry doors as there are issues with means of escape. Keyless Egress locks provide the same level of security as Key Egress Locks but the internal handle is not lockable. This makes them suitable for communal entry doors but unsuitable for glass panelled doors.
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