They are approx. 17mm wide by 35mm high by 10mm deep
Four of them are fitted to one of my door frames - the (plastic) door has vertically moving circular 'latches' that slot into the 'catches' from the top when the handle is pushed up.
I need to replace two broken ones but would buy a couple extra as spares.
Thanks
Okay, I now know it's called a multi-point lock and it uses 'rollers' on the door which latch into the parts on the frame that I still can't find.
The hunt continues.
A local double-glazing manufacturer may be able to supply them. I bought a complete locking system fomr one some time ago.
Andy
Thanks - I've now found that they're called Roller Keeps, but I still can't find an exact match.
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