A quick learner from Florida says:
April 19, 2016
I am missing the part that attaches to the non crank side of the window to hold it closed. Can you determine from the photos what parts I need?
Dave from SWISCO responded:
April 21, 2016
What I see in your photo is a torque bar Arm. Is that what you are missing? From the photos I can't quite make out which brand of window you have. Your parts might no longer be available. Could we see some photos of the operator? Make sure we can clearly see the mounting hole pattern, along with the measurements of their spacing. Also show a photo of the back gear side of the operator. These might help us to determine if parts are still available.