Office building casement cranks

A quick learner from Bensalem, PA says:
October 25, 2012
I was wondering if you might be able to identify our casement window crank operators if I were to send in several photos. We have an office building with around ten windows most of which have malfunctioning cranks that need replacing.
Thanks,
Jay
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
October 26, 2012
Good morning, and thank you for posting in our Discussion Board! It's hard to tell exactly what operator this is without seeing it removed from the window, but I can tell that its brand is Pella. Take a look at our 39-176 Sash Crank Operator and compare it to your hardware. Could this be what you're looking for? You may also want to look through our Pella Casement Operator Selection.
Sash Crank Operator, Pella
Sash Crank Operator, Pella
39-176
$241.70
Anatomy of a casement window
Anatomy of a casement window
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How to identify casement and awning operators
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