The goal of this customization is to secure the aluminum Slim enclosure directly onto the wall.
Although not supported out of the box, one way to achieve a flush look with the enclosure is to discard the original mount/bracket and follow the guideline below.
The dimensions shown below will guide you in creating your custom install.
Note that in this case the iPad is not installed until the very end. Once the Slim Enclosure is connected to an Ethernet cable and secure on the wall, the iPad can be installed following the conventional method highlighted in the manual.
The installation should be performed by a trained professional, following all relevant local rule and regulations.