Screen Door Trademark Home Nifty Magnet Screen Door opens easily then closes itself behind you using 18 powerful magnets. So if your hands are full or you have a forgetful family member, you can still let fresh air in and keep annoying bugs out. It goes up in seconds with no tools required and stays up all season long. Plus it folds up for easy storage. Fits single doors, sliding doors, RV"s and more. Instantly opens, magically closes. Great for pets too.