Need replacement balances for Andersen Windows

A home owner from Westerly RI says:
Big window sash is 36" x 27 1/2", Small window sash is 36" x 17 1/2".
Are there replacement balances available?
Big sash: BL 23 10#31 10 85
Small sash: C19 6423 785
Thumbnail of the uploaded file named Balance for Big Andersen Window.jpg
Thumbnail of the uploaded file named Balance for small Andersen Window.jpg
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Tom from SWISCO responded:

Hello! Thanks for reaching out to us, and for the concise information. Based on your stamps, "10#31" and "6#23," I would recommend our 24-1033 and 24-637 , respectively.

How to replace an Andersen Window Balance
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