Screen window repair

by Conan D
(Water Mill New York)

Hi,
I need to repair one screen/storm window for a client to match the other existing screen/storms at site.
The original builder had used the track seen in the attached photo.
Could you please let me know if you can get us a track like it?
Not sure I would use it if I didn't have to match existing, but that's where I'm at:)
Thanks!
Conan