Semco awning window operator

A handy person from Basin, WY says:
Will your product 39-083,a dual arm crank operator 21 1/2 inches long replace my Semco operator of the same size?
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Tom from SWISCO responded:
I'm not sure, I'm afraid I'm not sure what operator your Semco window used. Comparing our picture of the 39-083 to your own operator, do they differ in any way? If so, could you show us a picture of your part so that we can confirm whether it could work?
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