Sash balance help

Handy Person from 01072
I need to replace both sash balances in an Andersen double-hung window. Numbers on the cartridges are 11600-17 and BJ19 519 8-88. Do I need the #531 replacements?
Thanks.
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Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting. Correct, our 24-531 Andersen balances are meant to replace old Andersen balance boxes that include the stamp code 519. Let us know if you have any further questions. 

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