andersen sash replaement

A home owner from New Jersey says:
hi, I am searching for a replacement for a window that is at least 25 years old I need both left and right sash balancer, can you help to identify the part?
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. Based on your stamp of "9#27," we recommend our 24-939 Andersen sash balance.
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