35 inch counter balance

A professional from Manalapan NJ says:
May 28, 2020
I'm looking for two of these and I am hoping you might be able to help me .
I can I find any markings on the window but I was told that they are Anderson windows . This type uses a string with kind of a pulley system I guess ,but the string is gone it's not in the photo if that helps .
There is however markings on the counter balance and on one of the photos . It is 35C BSI JL . I hope you can help me thank you very much for your time
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Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
A professional from Manalapan NJ says:
May 29, 2020
I look forward to hearing from you and hope
You have enough information to locate the part
I need or at least something compatible !!
Thank you for your time !!!!!!


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Tom from SWISCO responded:
June 1, 2020

Thanks for your patience during this busy season. I am very confident that we can supply this balance, but I'm not 100% sure what you have. It might be a match for our S770-35, but I would need to see the metal clip that was at the end of the cord in order to confirm.
35" Series 770 Balance
35" Series 770 Balance
S770-35
$13.82
How to replace a tilt-window channel balance.
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