old balance description

A quick learner from St. Augustine, FL says:
The old channel balance which I removed from the left inside of the window has a long spring in the channel. Will the block and tackle work as long as I replace both sides? The window is an aluminum frame double hung non-tilt "thermopane" that measures 52" wide by 48" high. HEAVY. The condo was built in 1992. We own the condo from the inside of the exterior walls only and the windows are the owners' responsibility. We are right on the Intracoastal Waterway so salt vapor is an issue.

The metal part of the old balance measures 23" long and is, I believe, the 9/16" width. The marking on the metal piece is 2240. Please advise price and availability. Thank you.
A customer submitted photo of a channel balance.
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Paul from SWISCO responded:
Thanks for posting.

Please take a look at our S385-23 with a 2240 option.
A quick learner from St. Augustine says:
Thank you for suggesting the S385-23 with the 2240 option. However I cannot see what the 2240 option looks like. The picture of your S385-23 shows the end piece described as the 'shoe' with wings. The piece from our window does not have wings. See attached photo. Is that what the 2240 option covers?
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Paul from SWISCO responded:
If that's the case, then it sounds like you will need a S395-23 replacement balance with the option 2240.
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