So I've spent the last half hour looking for a thread with a sliding pop door design I loved but I CAN'T FIND IT. Ugh. Anyway, I am looking for ideas/pics of your vertical sliding pop doors and locking mechanisms. What I had in mind is a 12x12 frame, runners, and a rope that can be pulled from outside of the coop. I can see the idea in my head, but when it comes to planning it for my own coop I can't get the little details on paper...such as how exactly to frame it out and lock it up. I really liked the idea of the door sliding into the coop frame...but I can't find the pictures of it! Any help/pictures/advice would be awesome