![]() The latch cannot be deadlocked from the outside but engaging the snib allows most standard nightlatches to be deadlocked from the inside. They feature a latch which is withdrawn by a lever handle from the inside and a key from the outside. They are suitable for use on the internal door of dual entry properties provided the external door has sufficient security but remember to lock the deadlock at night. They should never be used on an external door unless there is also a British Standard 5-Lever Mortice Deadlock fitted. Non-deadlocking nightlatches are your basic nightlatch and are the locks you see being opened with a credit card in the movies (slipping). Standard Nightlatches (Also known as Non-Deadlocking Nightlatches) This makes them the ideal choice for communal entry doors but not suitable for glass panelled doors. ![]() Keyless Egress night latches offer the same security against slipping and bumping as Key Egress locks but they do not feature the lockable handle. They are not suitable for communal entry doors, though, as the locked handle will create problems with ease of exit in the case of an emergency. Key Egress night latches feature a lockable internal handle that offers additional security against slipping and also makes them ideal for use on doors with glass panels as the nightlatch cannot be opened even if the glass panes are smashed. There are two types of BS nightlatch: Key Egress and Keyless Egress. They are designed for use on external doors and offer the highest security in a nightlatch. These nightlatches conform to BS3621 and bear the British Standard Kitemark. ![]() There are several different types on night latch and they all have their own capabilities and attributes. The standard backsets are 40mm and 60mm, although, some Union locks are available in a 50mm backset but they're rare.Ĥ0mm Backset nightlatches are generally used on doors with limited space e.g doors with glass panels or narrowboat doors and are known as narrow stile nightlatches.Ħ0mm Backset nightlatches are what most people have on their front door and are known as standard stile nightlatches. The case sizes of nightlatches vary considerably across the brands but the backset remains fairly consistent. The latch is accepted on the frame side by a keep or strike. They also usually feature a snib that allows the latch to be either held back in the unlocked position or to be deadlocked when the door is closed. It features a latch that is withdrawn by a handle on the inside and by key from the outside. A nightlatch is rim lock that is mounted to the inside surface of the door.
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