Andersen Window Counterweight

A home owner from New Jersey says:
Hello, I am replacing the two counterweights for an Andersen window. Following are all the markings I can find (very difficult to make out the nos.:
1031 3 S39 5 90 and the other is 1031 3 S3940 5 90

I hope this helps...great video for its removal
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Tom from SWISCO responded:
Thanks! Glad our video could help. For both balances, I recommend our 24-1033. This can replace Andersen balance boxes stamped with the number 1031.
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