Tom from SWISCO responded:
August 21, 2017
Thank you for reaching out to us. You may want to begin by taking a look Series 860 channel balance. Let us know if this could work as a replacement for you.
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Paul from SWISCO responded:
August 24, 2017
An easier balance system you can use is our S795-26, which uses a 1-1/4" wide T-Lock shoe. We would need you to weigh the sliding window sash to determine the correct spring weight. See our related video on installation, as well. You can find that on the right side of the page.
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