Window crank handle for Milgard Window

A quick learner from Oregon says:
Hello,
I work at a school and we need to replace a few of these window cranks, they have either disappeared or broke over the years. The windows are Milgard, the product # on the window is D-X71645. Any help you could provide is appreciated!
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Bob from SWISCO responded:

I am confident we can help, but I can't cross-reference that code to a specific operator. Can you show me the entire mechanism, including the link arm(s) that push and pull the window? A bird's eye view is best. From there I'll do my best to find exactly what you need. 

A quick learner from Oregon says:
Thanks for the response! I'm working offsite but I had my supervisor take a few pictures that I hope are what you need. Can you please let me know if these help identify the replacement crank?
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Casey from SWISCO responded:

Your operator looks a lot like our 39-239B. Take a look and if the specifications match up, the 39-375 and 39-376 handle and cover kits should work for your operators. Thank you!

A quick learner from Oregon says:
Hello,
Thanks for the recommendations! Our current windows don't have the fold in handle so I am not sure how that would work. I just received a picture of the mechanism that I think might be helpful in figuring out for sure what we need. Can you please let me know if this picture changes the recommendation?

Crissy
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Casey from SWISCO responded:

Our folding handles should work for you but you're welcome to use our 39-451 and 39-452 if you'd prefer to keep the same standard handles to match your existing hardware. 

A quick learner from Oregon says:
Hi Casey, great! Thanks so much for the response, I appreciate it.
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