SWISCO - The Replacement Hardware Authority

Dual arm window operator made by Anderson Window Company arms 10 1/2 inches long,

A quick learner from Eau Claire WI says:
The window operators were installed in the late 70s
User submitted a photo of a window operator.
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Tom from SWISCO responded:
Thanks for posting. This looks like our 39-390. Check it out and let me know if you think this can work as a replacement.
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