I have several windows in my Florida home that have broken due to the top sash guide breaking allowing the balance to move from the jamb. The pictures show the markings: 29 S (or 9?) CW (or GW?) CMC 11. They are 30" long. I think I have identified the correct part from your website, but would like for you to verify if it is the correct channel balance. My current one is 1/2" for non-tilt windows. I think the part number I need is either: S380-30 or S385-30. I also need to replace the top sash guides as they are busted. Thanks in advance for your help.
