1) a patented product, 2) very easy to assemble and fix, 3) prevent any small insects go indoor and very affordable 4) quick Features: 1,Its DIY type,easy to be assembled and fixed onto the original window,seamlessly magnetic sealed and very easy to be cleaned.2,any of small insects can be prevented to go in.3,Two steps to fix: firstly,attache 4 magnetic panels to the frames of the original ...