channel balance replacements

A home owner from bonita springs florida says:
March 18, 2017
I have 6 windows that have the balances broke and won't hold up the window. they are 29 inches long and have then number unique 28-B-20 17/04/97 and I am not sure if it is 380 or 385 I want to order 12 but don't want to get it wrong.
Thank you very much
Priscilla P
A home owner from bonita springs florida says:
March 18, 2017
that was S380 or S385
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
March 24, 2017
The only difference between the Series 380 and Series 385 is the size of the shoe. I can't really eyeball what yours is, but it looks like it might be closer to the shoe that comes with the Series 380 balance. You will need to measure yours to confirm.
29" Series 380 Channel Balance
29" Series 380 Channel Balance
S380-29
$11.10
29" Series 385 Channel Balance
29" Series 385 Channel Balance
S385-29
$11.10
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