Dcouplable NeedFashion screen is idale for all windows whose size is infrieure, such as velux, glass bay, roof window, aluminum window frame, sliding window, swing window. PLEASE MEASURE BEFORE PURCHASE Clean ClosureSoftware window is fixed by mangtic strips. After opening or closing the windows, the mosquito net closes automatically. Double Reinforcement and Rglable OpeningThe windproof loops that can prevent the mosquito net from being carried away by the strong wind, and can also adjust the size of the mousticary Installation and Easy StorageNo other tool is needed to complete the assembly, please seek the vido for the installation process. Mosquito net is foldable for storage when it is not used and does not take up space. Washable and Durable Velux mosquito net is made of polyester fibers which is more resistant to heat and wear than glass fibers. Do not worry about damage during cleaning. The fine meshes prevent insects from entering but ensure the circulation of air to ventilate the house.