To carry out the installation of a plate it is necessary to place a box on the wall or wall where we will later fix the plate. The embedding boxes are made of plastic. They have hinges that can be folded in any direction, which allow the plate to be held while wiring. They have circular indentations in the bottom of the box, which are punctured with a light tap or pressure, thus allowing the cables to pass through. In the event that several plates are combined, always from the same series, it is necessary to use a set of spacers for a perfect coupling. One set is required for each additional plate that is installed between the flush mounting boxes.