Andersen sash balance

A handy person from NJ says:
March 16, 2018
This is from a double hung wood window that does not tilt out for cleaning.

Has markings on it:

1600R-2

K30 837 11 89

Trying to determine what replacement balance number is needed.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
March 19, 2018

You may go with our 24-837 Andersen sash balance to accommodate with your balance box stamped with "K30 837 11 89".
Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$54.20
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