channel balances

A handy person from Los Angeles, California says:
Hi, I need to identify and order the attached channel balances in these pictures, : the measurements are 9/16" x 30" for the channel, 9/16" width on the top end piece and 7/16" width and 1" front to back on the bottom piece; the number stamped on the channel seems to be: 29C USB or 290 USB.
Hope this is enough info to help to identify them.
Thank you,
A SWISCO guide to identifying balance shoes.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting, Louie. Please take a look at our S385-30 Channel Balance with a 2930 stamp option. I believe that this will work for your windows!
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