Caldwell Window Channel Balance + top/shoe

I think your bottom shoe looks closer to our 15-004. This isn't really something I can eyeball, though. You'll need to measure your shoe carefully to confirm. Make sure to account for wear. That is to say, keep in mind that the depth may be less than it originally was.

If the 15-004 is a match, I recommend the Series 350 channel balance.

My pleasure. Let me know if you have any other questions, we're happy to help.

The 18-009 is one of dozens of different top sash guides that can work with the Series 350. I'm afraid there's no way to determine what top sash guide you need based on just the balance. You'll have to remove your old one and compare our dimensions and photos to your sample to confirm whether the 18-009 will work.