I'm afraid I cannot identify this operator while it is still installed. I recommend removing it from the window and taking new pictures. That will help us find the best match.
A quick learner says:
April 2, 2015
Here is a picture after it was removed
Tom from SWISCO responded:
April 3, 2015
Thank you! Please see our 39-031 and 39-032 and let me know if these will work for you.