39-107FK Versus 39-375

A quick learner from North Carolina says:
Can you advise what the difference is between these two items? I have some 35 year old MW casement windows which I would like to upgrade with these items and want to ensure I order the correct pieces. Thanks!
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Dave Sr. from SWISCO responded:

This is a great question. The 39-107FK fits Truth Hardware's EntryGard series operators. The 39-375 fits Truth Hardware's Encore series operators. They are not interchangeable. 

What operator do you currently have? If you cannot match it up to one on our site please post a few photos for us to see. We would be happy to research it for you. 

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