channel balance

A home owner from Tucson says:
Per your great selection setup,it appears I need a 27 350 series. Is there a way to verify a correlate a number that is on my broken balance that reads----24 4 FW CMC 10 -----Thank you.
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Tom from SWISCO responded:
Thanks for posting. That stamp is not used for identification, it only tells you how strong the spring is. It also hints at the length of the metal channel, which should be 25", not 27". I would triple check your balance compared to our selection to confirm the best match.
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