window channel length

A quick learner from sausalito, Ca says:
January 23, 2018
how do i know what length to use on window channels . they were replaced years ago . but never worked correctly. now they all have sprung..
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Casey from SWISCO responded:
January 23, 2018
Thanks for contacting us. When measuring your channel balance, you want to make sure that you are measuring the metal portion of the balance only. I am going to place a tutorial video for your review below that may offer some additional assistance with your balances. If you would like for us to help locate a replacement, I invite you to send us some photos of the balance removed from the window. Be sure to include measurements, and any stampings/markings you may find on the actual balance.
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