Abstract: A stackable box has side walls and end walls upstanding from a base, the box being formed from a single sheet of material cut and creased to provide, between each end of each side wall and the adjacent end wall, a diagonally creased panel, the diagonal crease extending from the intersection between the base, the side wall and the end wall. The side walls are folded over on to the base and the portion of each diagonally creased panel between the diagonal and the end wall being secured to the end wall, whereby, when the side walls are pulled upwardly and outwardly from the base, the end walls are lifted. Each side wall has along the upper edge thereof a ledge panel extending inwardly of the box and parallel to the base and the end walls each have a flap along the upper edge thereof which is foldable over to extend parallel to the base and to co-operate with the ledge panels to hold the box in shape and provide a continuous ledge surface around the open upper face of the assembled box.