Sash replacement

A handy person from Goodyear Az says:
October 4, 2020
I need to replace a sash with the following code:
28--4 EA2 CMC 12
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Bob from SWISCO responded:
October 8, 2020

I am afraid that code only tells us the strength of the spring inside the balance. The nylon fittings on both ends are what determines the kind of balance you need, or what we call the Series. If you can show us up-close photos of both nylon fittings, I am confident we can narrow this down for you. Thanks. 
A handy person from Goodyear Az says:
October 10, 2020
1st three are of the same end.
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A handy person from Goodyear Az says:
October 10, 2020
Next group of three are from the opposite end
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Bob from SWISCO responded:
October 12, 2020

Thanks for getting back to me. Is the metal channel, not including those fittings, 29" long? If so, see our S395-29. You'll need a stamp option of 2840. 
A handy person from Goodyear Az says:
October 14, 2020
yes it is 29" long. I will look for the S395-29 with stamp option 2840.
29" Series 395 Channel Balance
29" Series 395 Channel Balance
S395-29
$10.87
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