☞CONVENIENT LOCK --- The style button button is rotatable in 4 directions. You can easily rotate it in 4 modes with the arrow and icons to control your cat's access options: in only, out only, free in and out, totally locked. ☞ WEATHERPROOF WATERPROOF BRUSH STRIP --- It provides a fixed groove with snap tabs for a weatherproof brush strip. Even if the brush strip comes off, it is easy to put it back in the fixed groove. It greatly helps the brush strip to reduce noise, prevent raindrops, wind or harmful insects like mosquitoes. ☞SCREWDRIVER KITS --- It comes with 2 packs of 8 screws each one, one is filled with short screws, the other is long. Screw them with both sides to avoid cracking, don't just stick to one side. You can make 8 screws for the 4 screw holes with long + long, long + short or short + short groups according to the depth of the door/wall being installed. ☞ EASY TO INSTALL --- Step-by-step installation instructions in the installation manual included in the sales box