casement window operators

A home owner from USA says:
Hi,

I have some Weather Shield casement windows that were installed around 1990. Two right hand, dual arm operators need to be replaced. It looks like the operators were made by Wright. From what I've found on your website, 39-316 would be the best option. The link arm on mine is 5". I've attached two photos. What do you think? Would the 39-316 fit properly in the sill and attach to the window bracket correctly?

Thanks,
Jeff
Thumbnail of the uploaded file named IMG_2786.jpeg
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Tom from SWISCO responded:

Hello,

To me, your operator looks more like our 39-172 and 39-171 based on the position of the straight arm over the gear arm. Take a look and see how the overall dimensions match up to your part. Thank you!

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