Can be attached and removed in a few minutes, can be attached quickly and easily without tools or drilling, dimensions 100x220 cm, the inside diameter for doors up to a size of 85-94 cm, outside diameter for doors 98-105 cm You can easily attach the insect screen to the door frame with the strong Velcro fasteners, extra thumbtacks are included, strong enough for years of use. Ideal for balcony doors and basement doors, enjoy free hands and pet-friendly use (cat-safe) Quick and easy to install within minutes using the Velcro strips and thumbtacks provided; no permanent damage to your door frame from drilling or nailing Magnetic locking system enables convenient, hands-free entry and exit. Even children and pets can easily pass through the net The strong net keeps insects out and lets in fresh air, cats and dogs, The polyester fly screen is of the best quality and very resilient Bugs stay outside - babies, cats and dogs can still get in and out Balcony door open to enjoy the fresh air. When glowing hot weather in summer, these insect screen curtains let the fresh air in. Dont miss out on anything excellent outside. Installation in minutes. 1: Clean the door frame Clean the door frame carefully before attaching the Velcro fastener. 2: Attach the Velcro fastener to the door frame. Take the exact dimensions of the door and use scissors to cut the Velcro fastener to the desired length. Attach the Velcro to the top door frame first, then to the left and right door frames, pull and push the Velcro along the door frame. 3: Fly screen assembly.Start in the upper middle of the door frame, spread the Velcro fastener left and right by gently pressing it, use the enclosed thumbtacks for extra hold. In the scope of delivery: 1 * fly screen for Door 1 * adhesive tape (length: 530-600cm) 1 * box of thumbtacks Note 1. To attach the Velcro fastener to an old wooden door, please use the enclosed nails. 2. Check that the length of the Velcro fastener matches the length of the door frame before you attach the Velcro fastener. 3. If the fly screen does not close completely, remove the fly screen again, straighten it and put it back on. 4. Inside diameter for doors up to a size of 94 cm wide and 217 cm high ZYSD hopes you to be satisfied with every purchase.