Best way to identify balance?

A quick learner from Florida says:
I need to know what is the best way to identify the channel balance that I would need to replace the existing, the 2810 number is not a part number.
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Tom from SWISCO responded:
No, 2810 is just a stamp that tells us how strong the spring is. We can help you find the balance you need, but we will need pictures. Watch the video below for more information.
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