Channel Balancer for Simonton Window

A handy person from Sebastian Florida says:
Simonton aluminum window.
9016031/03 model
window size 53.125"x63"

channel balancer is 3/8"wide
top of metal to bottom of metal is 30"
top of plastic attached to metal to bottom of plastic attached to metal is 31"
User submitted photos of a window balance.
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
A quick learner from Sebastian says:
It appears to be neither.
The measurement appears to be 7/8"
But I am not sure the plastic is complete.
It may have broken off in the removal.
Hard to get it exact as the part is riveted in to the channel.
Profile picture of Tom
Tom from SWISCO responded:
That is a possibility. Either way, 1" is the smallest we have. It's possible yours has worn down from that, but even if it didn't you could also grind it down.
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