certainteed 3 point locking door hardware

A quick learner from Riverside county Ca. says:
The doors are about 15 years old and were made by insulite/certainteed
I'm looking for 3 point door handles original or after market I would even consider a combination of parts if I could make them work
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Dave Sr. from SWISCO responded:
Hello, I have received your images. Take a look at our 40-193 handle set. This is used on storm doors with a 7/8" back set. I'm not sure if this will work for you, however. See if your dimensions match up to the one in your door. What do you think?
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