Hi I have a bunch of these old Jalousie windows. I am missing this complete operator part and for others I am missing the crank.
Casey from SWISCO responded:
May 20, 2020
Hello,
Start by comparing our 39-058 and 39-411 window operators to yours, paying close attention to the hole spacing and size of the attachment hole in the linkage. Take a look and see what you think. Thanks for posting!