Features: -Equipped with high ma-gn-etic ma-gn-ets, it can stay tightly closed and resist strong winds. -Automatic opening design allows you to free your hands, convenient in and out, and allows pets and children to pass through easily. -The fine mesh ensures proper ventilation inside the room after installation while blocking annoying flies, bees and mosquitoes. -The edges are finely sewn and are not easy to break even after long-term exposure to sunlight. -Installation and removal is very easy and quick, no tools required, no drilling required, just use the provided Velcro strap. -Perfect for fixing to balcony doors, entry doors, sliding doors, patio doors, cellar doors, bedroom doors, kitchen doors and more. .