39-020 with a 6" arm?

A quick learner from Clinton, CT says:
I have a window crank that look just like your product 39-020 except the arm is only 6" instead of 9" Can you help me out? It's for an octagonal window hinged at the top. Thanks
User submitted photo of window crank.
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Mike from SWISCO responded:
Good Morning,

We appreciate your patience. Unfortunately, we have discovered we can only offer this operator with the 9" arm.
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