Anderson window balance right side

A quick learner from 54944 says:
numbers found on the assy:
11600 17
3.335 455
The window overall size is 36W X 44H non tilt
The windows are about 28 years old.
Any suggestion what balancer to buy???
Andersen balance
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Tom from SWISCO responded:
Based on your stamp of "823," we recommend our 24-837 Andersen sash balance.
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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