Anderson window balance

A quick learner from Huntington, NY says:
August 28, 2015
I need left and right replacement balances. The numbers on the tab next to the staple read: 419 B14 8 91 . The numbers under the Anderson logo read: 11600A-3
US pat no 6.3.335.455
The boxes measure 3" X 6 1/4" X 3/4"
Profile picture of Tom
Tom from SWISCO responded:
August 28, 2015
Thanks for posting. I believe the key stamp here is "419." Would this be displayed more prominently, or off by itself? If so, I recommend our 24-431.
A quick learner from Huntington, NY says:
August 28, 2015
Here is a picture of the balance
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
August 28, 2015
Thank you! Yes, our 24-431 is what I recommend.
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