Need to order replacement window balances

A home owner says:
Information written on side of window balance: 33 3 CALDWELL JM

It measures 33 3/4 inches in length

It measures 1/2 inch in depth
User submitted photos of a window balance.
A home owner says:
I measured again and I believe its 34" in length. It's very late now and I'm tired.
Profile picture of Tom
Tom from SWISCO responded:
Hey, thanks for posting. I've narrowed this down to two possible channel balance Series: either our Series 380 or our Series 385 balances.

Now, as you can see, there is only one difference between these two Series, and that is their bottom shoe. The Series 380 uses the 15-005 while the Series 385 uses the 15-004. I can't quite tell what you have based on your pictures, though. Please carefully compare their dimensions to your own hardware and see which is a better match.
15-004 and 15-005
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