Features: 1. Ultra-fine mesh: 1mm mesh, just the size of a hole, easily blocks mosquitoes, no matter how small. 2. Built-in magnets: Powerful magnets sewn into the center of the polyester mesh keep the screen door securely closed. 3. Convenient magnetic strip: The magnetic door opens and closes automatically and easily as you pass through. Even in strong winds, the screen will remain closed due to the powerful magnetic strip and will not open automatically. 4. Child-friendly: The screen door is equipped with a powerful magnet for automatic closing. It is also lightweight enough for children and small pets to easily enter and exit. Installation steps: 1. Clean the door frame; 2. Attach the Velcro to the screen door; 3. Find the correct location; 4. Attach it from the top of the door frame; 5. Attach both sides; 6. Inspect; preventive measures. 1. Choose a mosquito net with a width and height as close as possible to yours (but not smaller). 2. There may be a 1-3 cm margin of error due to manual measurement.