Searching for what lockset do I need for a American Cr

A quick learner says:
I believe this is an American Craftsman 50 series door . I need a lockset that you can use a key to lock and open from the outside.
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Paul from SWISCO responded:

Hello,

We believe the handle set is our 82-035, but if you want a key lock and housing please see our 82-315. Carefully compare our dimensions to yours and see what you think. 

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