Window stripping

Thanks for contacting us. The only similar sill track we carry is our 55-028. This is 1/2" wide 3/8" tall. However, I'm not sure if this is the same size as your track. Do you know the manufacturer of the window? That may help us determine if your sill track is still available. One other thought would be to use a length of Azak type trim board and use that as a replacement. Let me know what you think!