Dark bronze 11" casement arm

A quick learner from Rhode Island says:
February 22, 2017
I am looking for cranks that are similar to your item 39-028, but with an arm length of 11" instead of the 9 1/2". If you can locate, I will need both a left and right in the Dark Bronze color.
The 11" is measured from the same point as in your picture.
Question: if you do not have an 11", would a 9 1/2 work ok, but just not open all the way?
Or, would the 13" arm give me full range, and would I have to move the track?
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Dave Sr. from SWISCO responded:
February 28, 2017
You might have an older operator. I'm not sure you can use the 13-1/2" long arm, since it might prevent you from closing your window all the way. You might be better off with the 9-1/2" instead. The shorter arm might not open as far as your 11", but it's better that a window not open as much than not close as much. See what you think.
A home owner from Warwick ri says:
March 1, 2017
Thanks for your response, I have purchased the 9 1/2 version.
I want to thank both you and Steve for your guidance, and to Swisscom for the quick response and professional handling of my request.

Mike
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Dave Sr. from SWISCO responded:
March 1, 2017
It was our pleasure, Mike. Please let us know if you ever need anything else!
Casement Window Operator, 13-1/2" Arm
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