Dave Sr. from SWISCO responded:
June 3, 2016
Looking at the link arm on your operator, I notice that it is riveted on the Top side of the gear (when the operator is laying down). The 39-012 has the link arm riveted to the underside of the gear arm (when laying down). Both operators have the link arm close to the side edge of the housing. This might work on your window. I believe it is the closest we can come up with.
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