A store includes supplying modules, which define rows, which are arranged one next to the other. Each row has a predetermined number of crates. At least one flooring structure, which supports the supplying modules, defines a walk-off surface. A moving system for a handler of the crates includes an overhead-travelling-crane, which is arranged in the upper part of the supplying modules and is adapted to move the handler in a reference plane, so as to reach the single crates. The overhead-travelling-crane includes a horizontal truss, which, in turn, has a carriage, to which the handler is fixed. The horizontal truss is adapted to slide along at least two longitudinal guides rigidly fixed to the supplying modules of the external rows, which define the horizontal extension of the store. Each module is rigidly fixed to the flooring structure.