Andersen Window circa 1985 ish

A quick learner from harleysville pa says:
July 1, 2020
hey, i would like to replace the balances on 2 windows. can you help me with which one i need. it also shows 11600-17.
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Casey from SWISCO responded:
July 6, 2020

Hello,

It's hard to make out in your photo but it looks like your balance may have (6 23) stamped on it. If so, take a look at our 24-637 Andersen sash balance. If the stamp actually reads differently, please provide us with all of the stamps on your balance and we can go from there. Thank you!
Andersen Sash Balance, 623, 627, 631, 637
Andersen Sash Balance, 623, 627, 631, 637
24-637
$54.20
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