Channel Balance Identification

A home owner from California says:
Thank you for your helpful video on how to identify a part! I can't get a picture of it installed because it's hidden on the side of the sliding aluminum window.

It's a channel balance (I think that's what it's called).

24 3 GL Caldwell

25 inches long (metal length only)
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Bob from SWISCO responded:

See our S351-25 or S390-25 . The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. For a new stamp option, use 2430.

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