Anderson cottage window replacement balance P81 2#27 3-87

A home owner from Lebanon. NJ says:
August 13, 2015
he window description as follows: Anderson cottage window.
Markings: 11600-17
P81 12#27 3-87

I will need two sash balances.

I have attached four photos of the sash. After looking at this serial number on my larger screen computer instead of my camera phone, it looks like the number is 12#27, not the one I gave you which was 2#27.
User submitted photo of their window balance.
Profile picture of Paul
Paul from SWISCO responded:
August 13, 2015
Since your balance is stamped with "12#27," I would recommend our 24-1231 balance. However, this is not for a cottage window. Can you confirm that?
A quick learner says:
August 14, 2015
Hello Paul,
Thanks for update on replacement number. I'll order this from you online
Richard
Andersen Sash Balance, 1226, 1227, 1231
Andersen Sash Balance, 1226, 1227, 1231
24-1231
$54.20
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