27 3 FV CMC 7

A quick learner from AZ says:
Any insight regarding this waindow balancer stamp
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Tom from SWISCO responded:
Unfortunately, that balance stamp only helps us verify the length of 27". To identify the balance itself, use our channel balance guide . To identify the stamp option, weigh your window sash and consult the table on the webpage of the channel balance you end up selecting.
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Tom from SWISCO responded:
A stamp of 27 3 usually corresponds to our 2730 option, but you can always weigh your sash to confirm. `
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