window cranks in church

A purchasing agent from Baltimore says:
Hello, trying to replace old window cranks for the church. Unsure of what type to replace with 39-252 or the 39-205. Both a look except for the measurements. I would like to send you a photo of the type we have. I would like to order 40 each for the church. I have a tax exempt number for the ordering. Thank you.
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Casey from SWISCO responded:
Thanks for reaching out to us. To ensure we recommend you the correct replacement, could you send us a few photos of the cranks you are currently using?
A quick learner from Church of the Holy Trinity says:
Attach are the actual cranks still install on the windows.
Window operator
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Dave Sr. from SWISCO responded:
Thanks for posting. I'm not sure what can work. You mentioned two of our operators, but you didn't specify what your own measurements are, so I don't know what to recommend. Based on your picture, I think you might have an older Silverline operator. See our newer style 39-205 as a possible replacement. We have detailed measurements and pictures on our site you can use as a reference. You will have to measure yours and look over our dimensions to make sure they're the same.
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