SWISCO - The Replacement Hardware Authority

Andersen sash balancer 10#31

A quick learner from austin trxas says:
am trying to identify the existing sash balancers in my double hung andersen windows - about 25 or more years old. There are two numbers stamped into the existing balancers they are 11600-17 and BL4 -10# 31-9-84

I need to replace the sash balancer in several windows and they are all the same size windows. Can you help me identify the correct new part #
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Paul from SWISCO responded:
Thanks for posting! Take a look at our 24-1033. This can replace balance boxes with the stamp 10#31.
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