Storm door lock set

A quick learner says:
Looking for this door lock. It's for a storm door. Don't know where it was purchased, or the Nak and model.
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Tom from SWISCO responded:

This looks close to our 40-194, but I'm not sure how well your dimensions compare to our part. Carefully look over the dimensions we show on our product page to confirm. 

How to flip a storm door mortise latch.
How to flip a storm door mortise latch.
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