Keeper for pet panel door

A quick learner from California says:

I am looking for a flat striker/keeper to mount to a pet panel door. I'm trying to figure out the best method to lock the sliding door to the pet panel door.

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Tom from SWISCO responded:

Looks like you need to install a new keeper. Your current mortise lock is a match for our 82-238, which is only compatible with two keepers: the 89-030 and 89-036. I'm afraid that these are about as flat as it gets. I don't think you have other options for this lock.

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