Basic featuresEasy to install You just need to adjust the four-corner screw to install through the reaction force, and adjust the door rail installation length between the two xzlL-jtkmlls by adjusting the length of the screwDouble key: Adults open in seconds with one hand (one key open) Children under 3 years old cannot open (with anti-trick device, no need to lift)Safety gates materials: Strict selection of standard safety materials ABS + iron spray paint + environmental paintTall and wide security gates