Window sash replacement

A home owner from Fairview OR says:
Measurements 1/2". Metal end to metal end not including plastic attachements: 26 3/4" with plastic the complete length is 28"

Please advise correct parts replacement.

User submitted photos of a window balance.
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Tom from SWISCO responded:
Thanks for posting, Debra. Take a look at our S385-27 channel balance. This looks like it could possibly work for you. Can you just confirm the exact length of the metal channel? Based on your stamp, it should be 27".
A quick learner says:
Thank you so much for taking the time to address our question. yes, 27".
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Tom from SWISCO responded:
Great! Glad it matches up. And of course I'm always happy to help in any way I can. If you ever need anything else, let me know.
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