crestline window operator replacement

A quick learner from Wichita Kansas says:
Will this caradco product work on my crestline windows?
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Bob from SWISCO responded:

Thanks for writing in. I'm afraid we can't answer this question based on brand name alone, as these operators are very brand-independent. You will need to look over the dimensions below to confirm whether or not they match what you need.

Dimensions for 39-156
Dimensions for 39-156
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