Stackable paperboard container

A stackable container comprising:

• a bottom wall, opposite end walls, and opposite side walls;
• said end walls foldably joined to opposite ends of said bottom wall;
• each of side walls comprising an outer roll-over panel and an inner roll-over panel, said outer roll-over panels foldably joined along a first edge thereof to a respective adjacent edge of the bottom wall, and said inner roll-over panels foldably joined along a first edge thereof to a second edge of said outer roll-over panel, said inner and outer roll-over panels, in their operative positions, being folded into closely adjacent, parallel, overlying relationship to one another so that the outer roll-over panel forms an outer side wall panel and the inner roll-over panel forms an inner side wall panel;
• first securing means securing the inner and outer roll-over panels in their operative positions;
• at least one of said inner roll-over panels having first extension flaps foldably joined to opposite ends of the inner roll-over panels, at least one of said first extension flaps being folded toward the opposite side wall to be positioned alongside one of the end walls;
• second securing means securing each of the first extension flaps in position alongside its respective end walls;
• and
• at least one of said end walls having second extension flaps foldably joined to opposite ends of the end walls, at least one of said second extension flaps being positionable between the inner and outer roll-over panels.