verify the serial number compatible with 40-191

A quick learner says:
I've verify that dimensional the original Pella storm door lock match the 40-191 Storm Door Multi-point, but I have included a photo of the serial number to determine if the 40-191 component will be compatible.
User submitted photos of a mortise lock.
Profile picture of Paul
Paul from SWISCO responded:
Our 40-191 Pella mortise locks do not have serial numbers stamped on them. The best way to determine if it will work for you is to compare our dimensions to your own. If they're the same, then I think you'll be good to go.
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