Searching for pivoting dual arm casement window opertor

A quick learner says:

I have 12 severely corroded dual arm, pivoting (not sliding) vinyl casement window operators that need to be replaced. I am adding pictures. The arm from the operator mechanism is 3.5 inches long, the upper pivoting arm is 5 inches and the lower pivoting arm is 7 inches long. Hope you can help.

Laurence

Thumbnail of the uploaded file named window operator3.jpg
Thumbnail of the uploaded file named window operator2.jpg
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Emily from SWISCO responded:

Hi, Laurence.

It's hard to say from these photos but start by taking a look at our 39-220B and 39-221B operators. Look over our dimensions and compare them with yours to see if they match up to your original assembly. 

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