Andersen balance replacement

A quick learner from Red Hook, NY says:
September 30, 2019

I am looking for a replacement balance for this window. Which balance should I get? The numbers at the top of the photo are 11600-17, and at the bottom the numbers are P78 12R 1-86. Thanks. Alan

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Paul from SWISCO responded:
October 4, 2019

For your balance marked with "P78 12r 1-86" our 24-13R would be the replacement for the right side of the window and for the left side, our 24-13L is the correct one. Look over both sash balance boxes and let us know if you have any further questions. 
Andersen Sash Balance, 13L, 12SL
Andersen Sash Balance, 13L, 12SL
24-13L
$54.20
Andersen Sash Balance, 13R, 12SR
Andersen Sash Balance, 13R, 12SR
24-13R
$54.20
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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Andersen's Narroline Sash Balances
Andersen's Narroline Sash Balances
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