missing piece

A quick learner from Parrish Fl says:
We are needing to get the piece that the latch fits into or possibly replace with a whole new complete locking system.
Can you advise us on what parts we could order from you.
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Bob from SWISCO responded:

Thanks for posting. Your mortise lock looks like our 82-227. This lock works with keepers like our 89-020 or 89-021. You'll need to ensure you have enough space to mount the keepers. See the diagrams below, and let me know if you have further questions.

Alternate image for 89-020
Alternate image for 89-020
Alternate image for 89-021
Alternate image for 89-021

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