In search of replacement channel balancers

Thanks for posting! I don't see your top nylon fitting in your photos, so I can't be sure exactly what you have. Does it look like our 19-005?

If so, then you have either our S380-30 or S385-30. The only difference between them is the depth of your shoe. You'll have to measure yours to confirm the better choice.

Finally, let's talk about your 29-9 stamp. All stamps ending in "-9" use an outdated rating system that isn't used much anymore. One of our standard options will probably work instead, but you'll need to weigh your sash on a scale to confirm which one is best. We have a chart on both the S380-30 and S385-30 store page that tells you exactly how much weight each option supports.