Need Replacement Retainers

The part you are looking for is referred to as a top sash guide. Unfortunately, I am not able to identify it based on these pictures. I will need you to remove it and take a few pictures of it by itself.

It's easy enough to take top sash guides off. Just remove the sash and unscrew it. To see how to remove this kind of sash, watch the video below.

Perfect, thank you! See our 18-166 and let me know if this is a possible match.

Sure, no problem! As for the balances, I've narrowed this down to two possible channel balance Series: either our Series 380 or our Series 385.

Now, as you can see, the only difference between these two Series is their bottom shoe. The Series 380 uses the 15-005 while the Series 385 uses the 15-004. I can't quite tell what you have based on your pictures, though. Please carefully compare their dimensions to your own hardware and see which is a better match.

Yes! A stamp of 29-6 does typically correspond to our 2960 option. It may be a good idea to weigh your sash just in case.