Need replacement Top Sash Guide

Hello there. It looks like the Top Sash Guides in your window broke. The guides are nylon pieces in the top corners of the sash that keep the channel balances (the metal channel with the stamp on it; they help regulate the opening and closing of the window) in place. When the guides break due to age, the channel balances shoot past the window sash and basically jam the window. You will need to replace your Top Sash Guides. We can help with this, but you'll need to remove an undamaged one and show us pictures of it from the front and side. That will help narrow down what you need.