Replacement sash balance for old Andersen windows

A home owner from New Jersey says:
January 1, 2020
Hi I'm looking for a replacement sash balance for an Andersen window. On the part there are two different numbers, one is "11600-17" and the other is "BF 10#31 9-86"
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Casey from SWISCO responded:
January 2, 2020

Our 24-1033 Andersen sash balance will replace your balance marked with "10#31". Have 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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