Windpw balance

A quick learner from NY 10980 says:
Please let me know what would be the correct replacement part for this window balance on my Andersen windows thank you very much
John
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Bob from SWISCO responded:

See our 24-837. This is meant to replace Andersen sash balances with a stamp 823. 

24-837 : Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$47.95
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How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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