Andersen Sash Balance

A quick learner from Trenton, NJ 08690, USA says:
Team,

I have Andersen windows from 1977 and I am looking for replacement sash balances. The stamp says

J19 5P27 577

Can you assist with identifying the replacement part? Thanks so much!
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Casey from SWISCO responded:

Hello,

The 5P27 stamp indicates that you need the 24-531 Andersen sash balance for your window. Take a look and let us know if you need anything else. Thank you!

24-531 : Andersen Sash Balance, 519, 523, 525, 527, 531
Andersen Sash Balance, 519, 523, 525, 527, 531
24-531
$47.95
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How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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