Determine What No. of Balancer Is Needed

A quick learner says:
January 19, 2020
Numbers that can be read. "11600-17" and "S88 7/02." "7/02" is likely to be when window was made. Do not have glass etchings but could supply them later.

Width of lower sash is (inside visible) 28 1/2", maybe 28 7/16"
Length is 27 3/4". Could be 27 15/16". W x L could mean window 2852 from what I looked at but Andersen Parts catalog shows differing Balancer depending on glass. Very confusing, hope you can help.
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Paul from SWISCO responded:
January 22, 2020

Being as our Narroline Andersen 2002 window switched the thickness of the glass to 5/8", you should be able to use our 24-1033 Andersen sash balance as a replacement. Take a look and let us know if any other questions come up. 
Andersen Sash Balance, 1027, 1031, 1033
Andersen Sash Balance, 1027, 1031, 1033
24-1033
$54.20
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