SWISCO - The Replacement Hardware Authority

Anderson Sash Balance

A home owner from USA says:
I have a 28" width by 37" height double hung Anderson replacement window that are 20+ years old with 3" by 6 3/4" sash balance shown. They are marked on the side shown with 11600-17 and on the reverse side with 11600A-3. On the flange the following 549 1 is to the left of the hole and J56 2 90 is to the right. Can you tell me which sash balance to purchase? Thank you
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Paul from SWISCO responded:
Thanks for posting! Please see our 25-531. Based on your stamp, I think this could be a good match.
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