34" Windows Channel Balance

A home owner from Charlotte, NC says:
January 23, 2018
I am trying to identify what part # I should order for a replacement of 34" Window Channel Balances. One if for the left side of a window and the other is for the right side of a window. The first few pictures show a good working one in an existing window, while the last few pictures show the damaged ones I need replaced. The only thing stamped on them is 3400 BSI LF on one and 3400 BSI LG on the other. Series 775 seems to be a match but I am not sure. The shoe does not look the same. However the shoe is not damaged in the existing window. Can I just reuse the shoe and attach the string from the balance to the existing show?
User submitted photos of a window balance.
A home owner from Charlotte, NC says:
January 23, 2018
I forgot to mention. These use 2 1/2" pivot bars. I recently ordered some from you to replace broken ones on other windows (item 26-021).

Also I have a lot more pictures if you need me to send more pictures.
Profile picture of Tom
Tom from SWISCO responded:
January 30, 2018
Thanks for contacting us. Based on your pictures, I think our Series 770 looks like it could be a better match. Instead of a shoe at the end of the cord, its just a clip that can fit into your old shoe.
Pivot Bar, 2-1/2"
Pivot Bar, 2-1/2"
26-021
$1.97
34" Series 770 Balance
34" Series 770 Balance
S770-34
$13.77
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