Balancer top and shoe ID

A handy person from Tacoma, WA says:
I know I have the right balancer length and width (21" long and 9/16 wide), one set is stamped 2020 and the other 2040 (2 types of windows). Can't quite tell if I have the right top and shoe, I think its 19-005 and 15-005. Can you tel from these photos? Was goint to order your S380-21
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
It's hard to tell from these pictures. That shoe could either be our 15-005 or 15-004, but without knowing specific dimensions I can't say. Take a look at the dimensions for both and let me know which is closer.
Detail of 15-005
Detail of 15-004
A handy person from Tacoma says:
It's really hard to measure with it still riveted to the old balancer, but it appears the 2nd image is closer. So that's the 15-004.

Also, just noticed when I pulled the balancer from the larger window (2040) that it actually has different end pieces - glad I looked! The top appears to be a 19-002 - the width of the tabs is 1/2", but at its widest point its 9/16", a measurement not really shown on your diagram. Is that correct? The bottom shoe is probably a 15-002, though the length (from bottom to top) is more like 1 1/16" rather than just 1". I don't see anything else that's close, does that matter?
Profile picture of Tom
Tom from SWISCO responded:
Ah, I see. In that case, for the first balance, I think you might want to look at our Series 385 channel balance. As for the other one, I think you might have the 15-001 shoe instead. I just think that it may have been worn down from use. Either way, even if the 15-001 is a bit too big, you can always sand it down a bit so that it's the right size, whereas the 15-002 would always be just a little too small. With that in mind, I recommend our Series 390 balance.
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