anderson sash balancer - replacement

A contractor from Wilmington DE says:
Need to replace sash balancer fo this Anderson window

there are three numbers etched on housing: 1600-17, 823,2-89
Thumbnail of the uploaded file named webcam-4/20/2020, 8:18:13 AM.png
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Bob from SWISCO responded:

If one of the stamps says 823, then see our 24-837 . This is meant to replace Andersen balances that include the stamp 823. 

How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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