4 lite mastic Alcoa bow window lock

A quick learner from New York says:
I need a replacement window lock. It measures 4 1/2 inches long. Can you tell me the part I need
Thank you
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Bob from SWISCO responded:

Your lock is similar to our 38-139 and 38-138, or perhaps the 38-095 and 38-096, I'm just not sure which (if any) will work. It will depend on size, and the projection of that fork. Review the dimensions we show on each product's respective store page to determine the best match.

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