34B Replacement Channel Balance

A handy person from McCordsville, IN says:
Stamped 34B. Its 34" long with a channel balance. The plastic piece that holds the string is all the way at the very end (this is what is confusing me) I need 10 of these
User submitted photos of a window balance.
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Paul from SWISCO responded:
There should be something attached to the end of the string, perhaps a metal clip of some kind. Can I see a picture of that? Thanks!
A handy person from McCordsville, IN says:
Here is the picture of the end of the string that you requested. Yes, it is a metal clip
User submitted a photo of window balance parts.
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Paul from SWISCO responded:
Ah, I suspected as much. This looks like our S770-28 S770-34 balance using a 19-020 top clip. Look them over and see if you agree. Be sure that your balance channel is plain, not ribbed! That is an important detail.
A handy person from McCordsville, IN says:
The S770-28 is only 28" in length and my original is 34". Would it be S770-34?
A handy person from McCordsville, IN says:
One other question, the balance that I have has the plastic roller for the string all the way at the end of the channel. The S770-34 does not have the roller at the very end. Is the S770-34 still the one that I would order?
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Paul from SWISCO responded:
The Series 770 also has the same plastic pulley rollers at the end, they're just a different style than yours. Also yes, I meant S770-34 before, my mistake!
A handy person from McCordsville, IN says:
Even though its a different style than mine, will it still work??
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Tom from SWISCO responded:
Sure, I'm pretty sure it's just a superficial difference between manufacturers. They both work the same way.
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