This convenient insect screen is an excellent choice for windows to keep flying insects out without resorting to poisonous sprays or other harsh chemicals while allowing fresh air in through the mesh. Featuring an aluminium frame with UV- and weather-resistant fibreglass mesh, this fly screen is sturdy and durable. The brush seals on every side increase the fit accuracy on the window frame and prevent even the smallest insects from invading your home. Thanks to the extendable design, this fly screen can be adjusted to fit your window size well. The screen and frame can also be cut to the desired size as per your needs. Additionally, the corner connectors contribute to its connection. The setup does not require drilling or screws, for it can be fixed to the guide rails easily. Note: This product should be used for a window with roller shutter.