top sash guide

I am confident we can help replace this top sash guide, but there are many different ones that might be used by this balacne. We'll therefore need to see yours out of the window, preferably with photos from the front and side, to narrow down what you need. Many thanks. 

Thank you for getting back to us with photos of your top sash guide. Our 18-178 top sash guide pair look to be compatible with your guide. Look over our measurements and let us know what you think.