Replacement 29" channel balance 28 4 IU CMC 7

A quick learner from cudjoe key florida says:
January 13, 2012
Markings on the balance are as follows: 28 4 IU CMC 7. 29 inches total metal length. rolled edge. from a NuAir single hung window
A customer submitted photo of channel balance attachments.
Profile picture of Tom
Tom from SWISCO responded:
January 17, 2012
Thank you for posting, and for the pictures! I believe you have an S385-29, but before I can say it definitely I would like you to take a look at the graphic below. Confirm your balance has the 15-004 attachment (which looks very similar to the 15-005 attachment).
A SWISCO guide to identifying balance shoes.
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 4-7 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 856-317-6263 or at help@swisco.com.