Locks for Crestline double hung windows

A home owner from Sanford Michigan says:
Need to purchase 6 locks for Crestline windows. They are 20 years old.
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Bob from SWISCO responded:

Thanks for posting. See our 90-320. It looks similar to your old lock, but I can't be certain without knowing the dimensions. Look at the specifications below and let us know what you think.

Dimensions for 90-320
Dimensions for 90-320
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