A tri-fold plastic egg carton for protecting jumbo eggs in both oriented and non-oriented positions. A cell base and cell cover are hingedly connected in a closed position with the cover over the base to form a complimentary 2×6 matrix of cell pockets for holding individual eggs. A lid is hingedly connected to another edge of the base for closing over the assembled cover and base. The non-hinged peripheral edges of the base, cover and lid form a trim perimeter having a turned up lip edge, the lip edges mating when the carton is in the closed position to increase the carton strength. The carton can accommodate a full range of jumbo eggs, and accept a variety of smaller size eggs, while fitting within standard cases and half-cases.