I have an older Guardian slider that needs a screen. I am not quite certain exactly which track a screen would slide on? I am trying to figure out where to take my measurements, so I can order a screen kit.
Thanks for the pictures
That patio door has a track on the top and a track on the bottom for the screen.
Measure from the bottom of the top track to the top of the bottom track. Add 1/4" to that measurement. Thats the height of the new screen door.