Easy Installation: No drilling required, no tools required. The self-adhesive strip can be attached directly to the door frame without damaging the door. If you need it, we have provided a dozen thumbtacks. Automatic Closing: Thanks to the magnets evenly distributed throughout the curtain, its magnetic force is enhanced. It closes automatically behind you, allowing children and pets to go out and come back freely. Let Fresh Air In, Keep Insects Out: The mesh is made of ultra-fine mesh that lets fresh air in while effectively keeping insects out. You can enjoy pleasant and comfortable summers. Suitable for All Doors: Equipped with an ultra-strong self-adhesive strip, the magnetic screen door is suitable for most doors such as exterior door, bedroom door, balcony door, sliding door, etc. High-Quality Material: The curtain is made of durable fiberglass, unlike the polyester used by other brands. They are elegant, robust, fireproof, and do not break easily under cat claws and dog bites. According to the last picture, the size you should choose depends on the dimensions of the door. For the width, choose size L1+6 or L2, depending on the maximum allowed size. For the height, choose size H1+4 or H2, depending on the maximum allowed size. For example: If L1 ≤ 64 cm, choose a width of 70 cm If H1 ≤ 196 cm, choose a height of 200 cm Or If L2 ≤ 70 cm, choose a width of 70 cm If H2 ≤ 200 cm, choose a height of 200 cm