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I would like to replace an internal lock on the cupboard door in my flat. The lock is very old and I struggle to find a similar type in B&Q. I can mostly find locks that are to be mounted inside the door not on the side, like the one I have. I'm looking to learn the following:

  1. Does this type of lock have a proper name so I can search Amazon, eBay and find something similar?
  2. Judging by the provided dimensions, is anyone in position to suggest a potentially suitable replacement?

Measuers Outside Door

  • What is "B&Q"? . – isherwood Mar 10 at 19:52
  • @isherwood in the UK: diy.com – Konrad Mar 10 at 19:53
  • A reason to avoid the use of store names such as Harbor freight - some do not recognise them... – Solar Mike Mar 11 at 5:33
  • You might get lucky & after an overnight bath in Nitromors it might turn out to be brass… & salvageable. – Tetsujin Mar 11 at 11:36
  • Unlikely to be brass, judging from the thickness of the plate. I wouldn't have thought it would be strong enough. Brass locks are generally (in my experience at least) cast rather than stamped / formed. – SiHa Mar 11 at 11:42
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What you are looking for is a rim lock enter image description here

enter image description here

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  • It's similar, but the OP's looks like simply a tongue that locks the door - the knob isn't part of the mechanism. On a cupboard door, there's no need for a knob inside. It wouldn't hurt, maybe. Although it may catch on anything inside. But both knobs could be left off? – Tim Mar 11 at 8:52
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    Good point. Rim locks are available without knobs - this was just the first one that Google showed me :) Picture added of a better match, which I found on an eBay listing. – SiHa Mar 11 at 8:55
  • I’ve actually figured that in the UK, this type of lock is often described as ‘rim deadlock’. The first picture looks like ‘rim sashlock’. – Konrad Mar 11 at 11:52
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    @Konrad - Then we've both learnt something today :) – SiHa Mar 11 at 12:48

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