Replacement Anderson Sash Balance

A home owner from North Carolina says:
August 12, 2016
Looking to replace both left & right units.
I found this number on the left one:
BP8 12#27 3-85
Is that sufficient to find a replacement part #?
Thanks found your video very helpful,
Barry
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Tom from SWISCO responded:
August 15, 2016
Sure, that information is perfect, actually. See our 24-1231. This can replace Andersen balance boxes marked with "12#27."
A home owner from North Carolina says:
August 15, 2016
Just to be sure the 1231 will work for both left and right?
Thanks.
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Tom from SWISCO responded:
August 16, 2016
Yes, this balance can work on either side.
Andersen Sash Balance, 1226, 1227, 1231
Andersen Sash Balance, 1226, 1227, 1231
24-1231
$54.20
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How to replace an Andersen Window Balance
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