Anderson 2420 right hand casement crank

A quick learner from Akron, Ohio says:
Need a replacement for Anderson 2420 right hand casement crank. The casement is 4" wide and I believe that the arm is 9".
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Tom from SWISCO responded:

You have a very old operator that hasn't been made in years. We unfortunately don't have an exact replacement for it, or even a confirmed substitute, but I've had some past customers tell me that they got our 39-020 and 39-021 to work. 

If you go this route, you'd also probably need a new 39-520 track to put on the sash. Furthermore, the different style base may require that you alter the wood sill trim to accommodate the shape. Even after all that, I cannot guarantee that this will work. Your parts are just too old to make a guarantee.

I'm sorry that we can't give a more confident suggestion.

A quick learner from Akron, Ohio says:
Thank you!
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