Secure storm door latch set

A quick learner from Northern Texas says:
I'm looking for a secure latch for my parents' storm door. Do you have anything that would fit this?
It has a deadbolt.
User submitted photos of a mortise lock.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Take a look at our 40-186 lock set. This one is used on security storm doors similar to yours. Just be sure to match up the dimensions with your handle set.
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