Jordan channel balance replacements

A handy person from Fort Worth TX says:
Jordan windows, double pane insulated
Part Number ? Left : 2830F
Part Number ? Right : 2830
Sash Weight 18.6 lb
Please see attached photos for upper and lower fittings.
Thank You.
Thumbnail of the uploaded file named Lower Fitting 1 w Part Numbers.JPG
Thumbnail of the uploaded file named Lower Fitting 2.JPG
Thumbnail of the uploaded file named Upper Fitting 1.JPG
Thumbnail of the uploaded file named Upper Fitting 2.JPG
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Bob from SWISCO responded:

Thanks for posting. This looks like either our S351-29 or S390-29. The only difference between these two balances is the 'depth' of the bottom nylon shoe. Compare both with your old hardware to see what matches best. You will need a stamp option of 2830. 

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