A quick learner says:
March 25, 2010
I have a CDC awning window operator and have not found it yet even on the Internet. It's very old. The one whose dimensions appear to come close to 39-054. My CDC operator has two screws on the top and two screws in the bottom.
Paul Sr. from SWISCO responded:
March 31, 2010
Sorry, I am not familiar with CDC. If you cannot find it the SWISCO Web site, send us a photo of your operator.