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What lock for a 35mm internal door?
Anonymous user 11/11/2026 - 3.05 PM
Hi I have an internal solid core door 35mm. It’s between the porch and lounge. Wanted it to be more secure. I was thinking of a lock with a key, something more secure. Please can you advise. I have been looking at mortise sash lock. Can anyone advise on any good brands, and any advice on what size I would need for the 3 star lock cylinder? Also do the two need to be a particular size? I have very little knowledge, so please provide your responses that are easy to follow. Thank you
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1 Answer
Cyber Techwave Ltd
Rating: 5 out of 5
For a 35mm solid-core internal door between a porch and lounge, you can fit a keyed mortice lock, but I would be careful about which type you choose.
My recommendation would be a Euro-profile mortice sashlock that accepts a TS007 3-star Euro cylinder, rather than buying a standard mortice sashlock.
The important thing is that the lock case and cylinder must be compatible.
Answered11 November 2026
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