Top plastic piece to catch balancer

Question

Please help me identify this piece which broke on several windows.

Tom · Accepted Answer

Your top sash guide looks very similar to our 18-188 at first glance. However, I highly recommend reviewing our dimensions before you buy anything just to be 100% sure that everything matches up. If your measurements differ from ours in any way, let me know how and we can try to find you a better alternative.

Alternate view of 18-188