Anderson balance

A home owner from NYC says:
Hi ! I need 2 balance for my Anderson double hung windows
Thumbnail of the uploaded file named 8#31
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Bob from SWISCO responded:

See our 24-837 . This is meant to replace Andersen balances that include the stamp code 8#31, or 831. 

How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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