Channel balance s770

A quick learner from Floriduh says:
June 17, 2010
My balance is marked 27E but is the same dimentions as your 28" series 770. Is this an old style and can I use the 770? Thanks
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Donna from SWISCO responded:
June 18, 2010
27E is a stronger strength balance than what is currently listed and is for a 27" length balance if it is Series 770. Please check the length of the channel again and get back to us. If you are unsure of the balance series you selected, please send us some detailed photos.
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