Kolbe door latch keeper

A handy person from San Jose, CA says:
This latch is installed in a Kolbe Door. The previous owner removed the keeper to install a pet door. Can you identify the correct keeper to use with this latch?

Thanks,

Jeff
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Casey from SWISCO responded:

Hi Jeff, it appears you have our 82-226 mortise lock which is compatible with a few different keepers - 89-020, 89-021 and 89-021D. Looks them over and let us know if you have any additional questions or concerns.  

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