andersen sash balance

A quick learner from CT says:
February 10, 2022
Hi,I have a Anderson window balance which one do I order? Number 11600-17 is on mine thankyou Justyn
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Tom from SWISCO responded:
February 11, 2022

That number is not the one used for identification, unfortunately. These can be tricky since the correct number could be just about any one of them, depending on the make. The easiest way to determine this is to just take a clear photo of each number printed on the box and upload them here for me to see. I am confident that I can pick out the right replacement for you with that data. I'll know it when I see it.
A quick learner from CT says:
February 11, 2022
on one of the Anderson balance the number I see is B-1 4#19 486. the other one 827 BK13 7 89. they both also have the 11600-17. I tried taking pics but it doesn't come out well sorry
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Tom from SWISCO responded:
February 14, 2022

Thanks, this information is a huge help. I believe that the key numbers here for each balance are "4#19" and "827." If this guess is right, then you want our 24-431 and 24-837, respectively.
A quick learner from CT says:
February 14, 2022
Thankyou for your help have a great day
Andersen Sash Balance, 419, 425, 431
Andersen Sash Balance, 419, 425, 431
24-431
$54.20
Andersen Sash Balance, 823, 827, 831, 837
Andersen Sash Balance, 823, 827, 831, 837
24-837
$54.20
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