Replacement Balancers both left and right

A handy person from NJ says:
September 25, 2021
My strings for my Andersen bathroom window broke. I took both balancers out. They were fastened with only one staple. There is a number on both the left and right balancers of 11600-17 and on the balancer flange of 725. The lower window size (outside dimensions) is roughly 31 inch wide by 23 1/2 inch high. The balancer measures about 6 3/4 (including flange) inch long by 3 inch wide by 3/4 inch thickness. What do I need to order and how much does it cost for both a left and right hand balancer.

Gordon from NJ
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Casey from SWISCO responded:
September 30, 2021

Hello,

The 725 stamp on your balance indicated that you need the 24-737 Andersen sash balance to replace your original hardware. Thank you!
Andersen Sash Balance, 725, 727, 731, 737
Andersen Sash Balance, 725, 727, 731, 737
24-737
$54.20
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