Stackable container, comprising independent laminar elements made from cardboard or other similar materials formed by a bottom, two side panels and two front panels, and also including means to ensure stability during stacking, where: - the front panels and the side panels comprise notches (8, 8', 9) established in the lower part which complement projections (6, 6', 7) established in the upper part so that, when two containers are stacked, the projections (6, 6', 7) of a lower container are fitted in the notches (8, 8', 9) of another upper container and the lower part or base of the upper container rests on the at least one flat element (10, 10', 10") of another lower container; - the side panels and the front panel incorporate anchoring means in their adjacent lateral edges, the anchoring means comprise at least one front panel projection and one side panel projection and one front panel notch and one side panel notch, arranged alternatively in the adjacent lateral edges of the side and front panels, so that the front panel projections are fitted in the side panel notches, and the side panel projections are fitted in the front panel notches, the front panel projections incorporating a lower front panel projection which delimits a front panel hole, and the side panel projections incorporating an upper side panel projection (14") which delimits a side panel hole; - the side panels comprise trapezoidal cut-out in their free edges, characterized in that - it incorporates at least one flat element (10, 10") fixed to the upper edges of at least one front panel and the two side panels, - the flat element (10, 10") comprises at least one centred slot fitted in one centred projection, the centred projection starting from the upper edge of the front panel and also comprises two side panel slots fitted in two side panel projections, one side panel projection of each side panel, such that the side panel projections start from an upper edge of the side panels, - the side panel projections are located between the trapezoidal cut-out and the lateral edges of the side panels, such that the at least one flat element (10, 10") joins the two side panels to at least one front panel in an area of the side panel close to a meeting of the front panel and the side panels. - the front panels and the side panels comprise notches (8, 8', 9) established in the lower part which complement projections (6, 6', 7) established in the upper part so that, when two containers are stacked, the projections (6, 6', 7) of a lower container are fitted in the notches (8, 8', 9) of another upper container and the lower part or base of the upper container rests on the at least one flat element (10, 10', 10") of another lower container; - the side panels and the front panel incorporate anchoring means in their adjacent lateral edges, the anchoring means comprise at least one front panel projection and one side panel projection and one front panel notch and one side panel notch, arranged alternatively in the adjacent lateral edges of the side and front panels, so that the front panel projections are fitted in the side panel notches, and the side panel projections are fitted in the front panel notches, the front panel projections incorporating a lower front panel projection which delimits a front panel hole, and the side panel projections incorporating an upper side panel projection (14") which delimits a side panel hole; - the side panels comprise trapezoidal cut-out in their free edges, characterized in that - it incorporates at least one flat element (10, 10") fixed to the upper edges of at least one front panel and the two side panels, - the flat element (10, 10") comprises at least one centred slot fitted in one centred projection, the centred projection starting from the upper edge of the front panel and also comprises two side panel slots fitted in two side panel projections, one side panel projection of each side panel, such that the side panel projections start from an upper edge of the side panels, - the side panel projections are located between the trapezoidal cut-out and the lateral edges of the side panels, - it incorporates at least one flat element (10, 10") fixed to the upper edges of at least one front panel and the two side panels, - the flat element (10, 10") comprises at least one centred slot fitted in one centred projection, the centred projection starting from the upper edge of the front panel and also comprises two side panel slots fitted in two side panel projections, one side panel projection of each side panel, such that the side panel projections start from an upper edge of the side panels, - the side panel projections are located between the trapezoidal cut-out and the lateral edges of the side panels,