homedepot. has the .铝合金 edges, 纱 screen, and the slim rubber line, and a tool ($7) to push the screen and rubber line into the edge. easy project. spend 15 min to make a window. If you are going to make a big screen door, 铝合金 edges are not strong enough because the size of door and because door needs open-close frequently, and a door needs handler. Better buy a screen door.