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 .