Anderson window balance

A home owner from North Haven Ct says:
October 6, 2022
I am looking for help purchasing the correct balancers for my Anderson double hung windows. The visible glass dimension is 28 7/16" x 20" of one sash. The numbers on the existing balancer is 11600-17 and D84 7 # 27 6-87
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Casey from SWISCO responded:
October 6, 2022

Hello,

Your 7#27 stamp indicates that you will need the 24-737 Andersen box balance for your repair. Take a look and thanks for posting! 
Andersen Sash Balance, 725, 727, 731, 737
Andersen Sash Balance, 725, 727, 731, 737
24-737
$54.20
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