Identify Andersen Balance, please

A home owner from Illinois says:
The numbers stamped on the old channel balance are -
On the back: 11600-3
On the front: 11600-17 BP25 12#27 5 86

Thanks in advance for your help
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Casey from SWISCO responded:


Take a look at our 24-1231 Andersen sash balance that will replace an original balance with a (1227) stamp. Thanks for posting! 

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