High Quality Window Screen : Made of high quality fiberglass mesh, which is an inorganic non-metallic material with excellent performance. High temperature resistance, non-combustibility, corrosion resistance, good heat insulation and tear-resistant quality. Breathable Window Screen : Easy to install and detach, keep away annoying creatures, allow fresh air come through. Pet&kids friendly, anti-flaming and washable with long service life. Perfect for various kinds of windows and doors, including but not limited to Aluminum window frame, wrought iron grills, sliding window, casement window, bathroom/toilet window and even grilled gates and balcony. Sizes of Adjustable Window Screen : Fits all window sizes up to 50x60. Works for any smaller size windows and doors. If your window frame measures 50" x60" or less, then this adjustable magnetic window screen will fit your window perfectly. Measure your window before ordering. Outstanding Durability : This window screen adopts permanent magnets. Magnet power won't disappear even if you repeatedly open and close the window screen. For day-to-day use, just wipe with wet cloth or vacuum to remove any dust that stays on the screen. For spring cleaning, just remove the window mesh from the window and give it a good rinsing before putting it back onto the window to allow air dry. Package Includes : One piece of high quality fire-retarded fiberglass mesh; one roll of magnet tape; one roll of grooved magnetic strip; one roll of plastic strip; one bags of accessories and an instruction manual.