It's been opened, but it's unused because I realized the wall wasn't up to the required specifications during installation. This is a slim wall mount for installing monitors and displays on a wall. It supports VESA standards and is compatible with 100x100mm and 75x75mm, allowing for the installation of gaming monitors and other monitors. The bracket is a slim design, approximately 2.7cm from the back. The monitor can be rotated 360 degrees. Installation is easy, simply inserting the monitor into the bracket pre-fixed to the wall. * If the TV wall mount is installed on a wall with weak rigidity, the display may fall off. Please consider the rigidity of the wall sufficiently when deciding where to install the bracket.