Abstract: A container is made in a collapsed configuration with bellows fold corners for self erection. Outer end wall panels are joined to the container bottom, leading to horizontal ledge panels and inner end wall panels fold over and down to lock via tabs into openings in the bottom. Columns reside under the ledge panels and are provided by column forming panels folded inwardly and glued to the inner end wall panels. Fold lines define the corners of each column and bear against inner sides of the front and back walls holding the columns open. The column forming panels have protruding tabs back by corresponding tabs on one of the ledge panels betwen the inner and outer panels of the end walls. These tabs form a two thickness registration tab that engages a corresponding opening in the container bottom for stacking.

Abstract: A preferably one-piece fold-and-glue container has corners reinforced by extensions that fold over and compress self-erecting bellows or gusset corner joints, and cutouts in each of the four front, back and end walls. The corrugated paperboard panels of a single flat blank define a bottom, opposite front and back walls and longitudinally opposite end walls. The joints have bellows panels integral with the front, back and end walls, joined at folds oriented diagonally and being glued to one of the adjacent walls to pull one another perpendicular to the bottom when erected. The end walls have an outer end wall panel integrally extending from the bottom and joined adjacent to the front or back to an extension having a protruding tab at its free end for locking into the bottom when the extension is folded over the gusset joint.