284 caldwell balance what do I need?

A home owner from Portland says:
Hi there,
I have a channel balance to replace that has the numbers: 28 4 CALDWELL FM stamped on it. I don't see any numbers stamped on the plastic ends :(. The length is 29 inches not counting the plastic ends.
User submitted photos of a window balance.
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Tom from SWISCO responded:
Thanks for posting! Before I can offer an applicable replacement for this channel balance, I just need to know a bit more information about the bottom attachment. Please take a look at our 15-004 and 15-005 channel balance shoes, and note their depths. As you can see, they are 1-3/32" deep and 1" deep, respectively. Which one more closely matches your own bottom attachment?
A handy person from Portland says:
The bottom is 1 3/32 ! Look forward to ordering that part from you if you have it.

Thanks for all your help!!
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Tom from SWISCO responded:
Great! In that case, check out our S385-29 channel balance with a 2840 option. Compare this balance to your own and see if it's a good match.
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