Magnetic Instant Bug Screen Door Premium Mesh Hands-free 18 Fasteners mesh, polyestor Closes automatically every time, thanks to 18 magnetic fasteners! Installs in seconds with the included fasteners! Easy to use hands-free thanks to the central opening, just walk right through it! Easily adjusts to different heights and widths. For doors from 30" to 40" wide! Can be put up only when needed, or easily be moved from door to door!