I made my own with ideas and help from people on here.
Mine are all wood, frame and door. They do stick a bit so I am going to have to slick them up but so far they are working nicely.
Mine are on the inside of the shed and all the rope pulls are in the feed area (4 pop doors).
My biggest trouble is the Silkie roos that like to sleep on the door sill. I have to go in every night and push them away and tell them "bed!" so they will go to the corner to sleep. Then I can lower the door.
Here is the one I have in the middle pen in the shed. I hate covering the window during the day but the door does let plenty of air in to circulate and each wall has a window.