andersen balance 519 BJ35

A quick learner from CT says:
Hi, I have an Andersen double hung window with a broken cord for the inside sash. 11600-17 is clearly stamped on both balance assemblies. 519 BJ35 is on both too. The right is also stamped 1190; the left is harder to read but looks like 1090.
I assume both sides need replacing as the string is cut on both, unless the string alone can be replaced...

Thanks, hope you can assist.
A customer submitted photo of an Andersen sash balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. I see that your balance is stamped with the numbers 519. With that in mind, I would recommend that you take a look at our 24-531 Andersen Sash Balance, which can be used to replace balance boxes with 519 stamp.
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