This bracket attaches indeed very easily, without the need for tools. It consists of 2 brackets. The first is fixed on the grid (is pressed, is placed a spring and keeps it all), the second is fixed to the first (is slid backward in a slot of the first support) and allows placing the tablet. The second is automatically adjusted to the tablet's size. This support can be rotated until we find the right tablet viewing angle. Everything is dismantled quickly if it is to remove. Personally I just remove the tablet and allow the structure that does not bother me absolutely to drive or adjust ventilation.
This product satisfies me completely hence my note.