Anderson window balance right side

A quick learner from 54944 says:
April 15, 2017
numbers found on the assy:
11600 17
3.335 455
1160A-3
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:
April 19, 2017
Based on your stamp of "823," we recommend our 24-837 Andersen sash balance.
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