Hello,
Thanks for posting! Your patio handle set reminds me of the 82-093 Signature Keyed Handle Set. To confirm that this is the right fit for your door, carefully review and compare the dimensions below. This handle set comes with the compatible key cylinder and keys. You'll just need to cut the tailpiece to fit the door; we suggest using the existing cylinder for refer and cutting it down little by little so that you do not break/damage it or cut it down too far.
The mortise lock is sold separately from the handle set. The one compatible with your door and handle set appears to be the 82-260 Multi-Point Mortise Lock with Pocket Plate. Take a look to confirm that this is the right replacement.
