PN replacement ? Andersen balancer from DH window

A quick learner from Endicott, NY says:
November 16, 2021
C10 5 23 9 71 stamped on unit
15 15/16 by 28 7/16

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Bob from SWISCO responded:
November 19, 2021

See our 24-531 Andersen sash balance. This is meant to replace old Andersen balances that include the stamp 5 23. 
Andersen Sash Balance, 519, 523, 525, 527, 531
Andersen Sash Balance, 519, 523, 525, 527, 531
24-531
$54.20
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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Andersen's Narroline Sash Balances
Andersen's Narroline Sash Balances
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