Novatech "Discretion" Sliding Door Handle
Hello,
The mortise lock and keeper shown in your photos resemble our 82-265 and 82-249 replacements. These parts are used with a few different handle sets with 3-15/16" hole spacing. I would generally recommend the 82-030 handle set, which is a newer style replacement for the handle set shown in your photos and is compatible with the 82-310 key lock that is sold separately.
With that being said, you mentioned that this is not the original assembly and I do see an outline around the backplate showing where the original hardware was. We can't be sure without seeing the original but it's possible that the door may have used something like the 82-086, which is also compatible with the 82-265 mortise. You would need to confirm that the offset thumb latch would align with the spindle insert in your mortise lock since it is not adjustable. This stipulation is one of the main reasons that we prefer the 82-030 in cases like this. Take a look at the related options to see which would be the best option for your repair.
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