British Standard Nightlatches BS3621

British Standard Nightlatches BS3621

BS 3621 nightlatches are recommended by insurance companies and the police. The main lock bolt is automatically deadlocked when the door is closed, preventing the main bolt being retracted by a credit card. The inside handle can be deadlocked by an anti-clockwise turn of the key from the inside so securing the lock against forced entry. 

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4 Item(s)

per page