Screw the inlet to the studs (America) or into the brick wall (Europe) and connect the piping system and low voltage wires.
Once the wall is finished and the paint is dry, you just need to remove the cover plate (yellow) and put the door in its place. Then, all that’s left to do is adjusting the screws!
Warning! The installation of the central vacuum and of the piping system must be done by a professional, in compliance with the manufacturer’s instructions provided with the parts.