2 left and 2 right window cranks

A quick learner from Baldwin, WI says:
I do not have much information about the cranks we need except for the fact that we need 2 left operators and 2 right ones. I believe they are split arm operators? I am not sure though.
Thumbnail of the uploaded file named Clarke window crank1.jpg
Thumbnail of the uploaded file named Clarke Window Crank.jpeg
Thumbnail of the uploaded file named Clarke Window Crank.jpeg
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Emily from SWISCO responded:

Hello and thank you very much for waiting during this busy season. You're correct; this is indeed a split-arm operator. Our 39-171 and 39-172 look like they'd be good matches but I recommend comparing the dimensions with your old assembly to confirm they align with what you need.

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