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BS3621 Locks What Are They

BS3621 Locks What Are They

Added at 10:00 on 15 August 2023

What is BS3621?

Some locksmiths when first starting out dont know what some lock standards are so heres a quick summary on what some insurance companies require on wooden and some composite doors that have mortice locks on them. BS3621 is a lock standard by British Standards Institute (BSI) for thief-resistant locks, BS-3621 locks are found on some front and back wooden and compostie doors in the home and it’s a good way to check that a customer security is up to standard. This is why some insurance companies require door locks are fitted to BS 3621 British Standard.

How To Check If Locks Are BS3621 

One way to check if door locks are conforming to BS3621 is to look for the British Standard Kite Mark (BSI) on the faceplate of the lock.  The faceplate of the lock is viewable when you open the door; you should also see the specific standard number e.g. BS3621 stamped on the plate.

If a customers lock is stamped with BS3621 then its likely that the lock is compliant if no stamp then it will not be and would be a recommendation that the lock is upgraded to not only increase the security but also to comply with what a insurance company may require.