I have a hard time posting pics, so can't do so, but can tell you what we've done, and it worked very well. For a door, we used a large plastic cutting board, cause it was handy, right size, and slides very well in the track. Used J channel for aluminum siding to make the track for it to run up and down in. On the bottom, I recommend that you place a horizontal board, spaced out so the door can slide down behind that board a bit to prevent little predator paws from getting hold of it and pushing it up there. Place a stop about 1" down to keep it from sliding down all the way. I butt the J channel up to this board on either side. A hole in the top of the door, some wire to attach your string, a couple of pulleys, and you're done. I still have not done the pulleys or string on my door yet. I'm the ultimate procrastinator.