An arrangement of equipment for a motor vehicle provided with at least one reserved space consisting of one or several side walls which are located between an opposing bottom and an opening. The reserved space in the arrangement accommodates a plurality of equipment elements respectively including at least one frame. The elements have dimensions that are equal to or multiples of a base and which fit into each other and/or do so against the side walls of the reserved space as a result of cooperation which occurs between first and second fastening devices which are provided on the frame of the elements and on the walls of the reserved space. The fixing devices are distributed in a regular manner according to the dimensions of the base.