Will 39-317 work for me?

A handy person from Arcadia, WI says:
When ordering the 39-317 and 39-318 will my existing cranks work with the replacement operators?
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Tom from SWISCO responded:
Thanks for posting. I'm not sure if your existing cranks will work with our 39-317 & 39-318 Split-Arm Operators. Does your original hardware match these two operators? Do they have the same dimensions? If you aren't sure, I'd have to see some pictures of your existing hardware to know for sure.
A handy person from Arcadia, WI says:
They match exactly.
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