We installed this in a sliding screen door. It was easy to install and looks good. However, our cat could not learn to use the plastic cat door. The magnet was too strong, and if we "helped" her through, the plastic door would fall on her tail and freak her out. I contacted the company that makes it hoping there was a way to remove the magnet. There isn't. They had no suggestions. We replaced the door with a makeshift screen door and it works great. This door should be made with a screen flap option. If you are putting it in a screen door, then you don't need the flap to be solid. It would be nice if they provided a screen flap with a lightweight frame and a weak magnet.