Allow Easly fresh air to flow into your homes while keeping out flies, wasps, bees & mosquitoes. Enjoy a healthy environment by reducing the use of mosquito repellents that are harmful to children & pets. The pack contains a pre-stitched Net with loop tape on all four borders, and finishing tape stitched on the front for a good aesthetic finished look. Fiberglass material helps in dimensional stability, smoothness & enough hardness so as not to shrink/deform.