Dave Sr. from SWISCO responded:
July 29, 2010
Did you actually try the operator? There is some travel in the gearing that could make up the difference in arm length. You don't necessarily need the exact arm length. My next question is are you sure it is a Keller window you have? Check on the web site and look at our other operators we show. I have personally did service work for Keller industries and don't remember having trouble replacing awning window operators. Can you send us photos of your operator so we can try to identify it more closely?
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Dave Sr. from SWISCO responded:
July 30, 2010
You might be needing the 36-015 window hooks. They come in pairs left and right.
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