Anderson window PN

A quick learner from 11691 says:
Hey please see attached sticker on window frame. The string does not retract into the balancer. Is the balancer serviceable? Or will it need to be replaced?
User submitted a photo of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
I'm afraid Andersen balance boxes are not serviceable. Yours will have to be replaced. Based on this sticker, you may have our 24-837 balance box, but I can't be sure. The only way to know for certain is to show me a picture of each stamp printed on the balance box itself.
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