Jordan window balance 28 3 Caldwell BM

A handy person from Visalia, CA says:
Stamp is 28 3 Caldwell BM does this correspond to a 2830 of you part #?

Channel length of 29", 1/2" wide. sash is 34 W x 30 H
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Mike from SWISCO responded:
Yes, if you have the series 351 style window balance, the stamp 28 3 Caldwell BM will correspond to our balance option 2830.

If you need help to choose the correct series, please submit pictures of both the top and bottom attachments of your existing channel balance.
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