Channel balance 26-4 AE5 CMC 54 help

A home owner from Woodland CA says:
Hi, I wanted to start a new discussion but it gave me an error and said to email you. I have attached a picture of our channel balance. We aren't sure which part to order to replace it. It has markings of: 26-4 AE5 CMC 54. Metal length is 27. Thank you. Which do you suggest?

Thank you,
Nicole
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting, Nicole. I see you sent a picture of the bottom nylon attachment, but we also need to see the top nylon attachment. Let me know!
A home owner says:
I tried posting multiple pictures the first time, but it wouldn't let me. here is the requested picture.
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thank you. 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.
Comparison of 15-004 and 15-005
Comparison of 15-004 and 15-005
A home owner from Woodland says:
How would I know what the weight is for the channel balance?

Thanks,
Nicole
Profile picture of Tom
Tom from SWISCO responded:
It's determined by the stamp on your balance, which is "26-4". This translates to our 2640 stamp option.
How to Replace a Channel Balance Attachment
How to Replace a Channel Balance Attachment
VIDEO
WATCH >
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.