DIY SIZE: Our adjustable window screen is suitable for all window frames up to 47*51in, the height and width can be cut to fit the window. IMPORTANT NOTE: There is an installation video on the manual, please watch it before installation; Please measure your window frame before ordering Fine Fiberglass Mesh: The window screen mesh is made of upgrated fiberglass, which has advantages in flame retardant, fireproof, chemical resistance and tear resistance; Strongly bonded magnetic strip (magnetic force up to 720GS), upgraded 4 magnetic lines, doubling the magnetic suction force Wide Application: Suitable for almost all window types such as aluminum/wood/iron window frames, sliding windows, casement windows, shutters, skylights, bathroom/toilet windows, and even grille gates, caravans, cruise ship windows and balconies Breathable and Ventilation: This magnetic window screen provides good protection for kids and pets from tiny creatures. Whether it's day or night, you'll be able to open the window to get sunlight and fresh air and enjoy a sweet sleep on summer nights Easy to Maintain: The screen mesh is replaceable and washable. For daily use, simply wipe with a damp cloth or vacuum to remove dust. Or just remove the window screen, rinse it off and put it back on the window to dry! Roll it up and store it without taking up space No Drilling, Easy Installation: Window screens can be installed in 15 minutes. No screws or drilling required, keeping the original structure of the window. The screen uses a special adhesive with advantages such as high viscosity and durability, which will not leave marks on the window frame after peeling After Sale: Please contact us if you are not satisfied with our window screen, and we promise to provide a solution that will satisfy you. The window screen size may have 1-3 cm difference, which is normal, convenient for buyers to cut and install flexibly. Please check the window size before purchasing and choose a size larger than the window frame