29 9 FW CMC 4 channel balance replacement
A professional from USA says:
May 27, 2016
Can you identify the balance (it
Tom from SWISCO responded:
May 31, 2016
Thanks for posting. I'm afraid I can't make out your balance based on this picture, but I don't think you need to replace it. Rather, the issue appears to be the top sash guide. See the video below for more information.