Casement operator

A quick learner from USA says:
Hi , here are 2 pictures of the existing operator on a same window. This needs to be of heavier gauge than least expensive aluminum ones. Can you let me know what I should order, and how soon can I expect delivery . Thank you for your help.
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Emily from SWISCO responded:

Hey there!

Start by taking a look at our 39-044 and 39-045 operators with a 9" arm. Carefully look over our dimensions and see if they match up to your original assembly. 

Dimensions for 39-045
Dimensions for 39-045
Anatomy of a casement window
Anatomy of a casement window
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How to identify casement and awning operators
How to identify casement and awning operators
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