Single lid case. Molded-in, tongue-in-groove gasketed parting lines for splash resistance and tight seals, even after impact. Reinforced corners and edges for additional impact protection. Molded-in ribs and corrugations for secure, non-slip stacking, columnar strength, and added protection. Patented molded-in metal inserts for catch and hinge attachment points, which provide strength and spread loads to the container walls.