Hi, Trying to replace the door furniture in my house - all but two of the door latches are a standard size but the two fitted on a loft conversion done about 10 years ago are odd sizes. There is no reason for them to be a non-standard size, maybe it was what the builder had on him. This is what I mean by door latch I first had to overcome the weird concept that these are specified by the total length (which I think is largely irrelevant) rather than the distance from faceplace to the centre of the square hole that the spindle goes through (the backset, I believe it is called). Anyway, once I had got my head round that I have come to the conclusion that the ones I have are non-standard. From faceplate to end = 95mm From faceplate to centre of square hole (backset) = 76mm I need same size replacements because of the holes in the doors. One of the doors is a bathroom - the builder never fitted a lock so I'd like to change that to a handle with a thumb-lock so I'll need a bathroom latch/lock that has a 76mm backrest too. Any idea where I might find such latches. Cheers, Nigel P.S. The annoying thing when googling is that one of the standard sizes is 76mm total length with a 57mm backset so all my searches are hitting those.