Abstract: A rectangular perimeter egg carton comprising: a lid, and a base separate from the lid, wherein the lid and base are assembled together to from a closed egg carton, the base having a top wall and a rectangular array of recessed base cells arranged in rows and columns depending from the top wall, each base cell having an open top end, a sidewall and a closed bottom wall and being sized and shaped to hold one egg in a generally upright position with the long axis of the egg disposed in a vertical direction transverse to a base reference plane in which the bottom walls of the base cells reside; the base and lid having respective mating rectangular perimeter edges, including opposing front and rear side edges and opposing left and right side edges, that mate with each other in a closed position to from the rectangular perimeter egg carton for enclosing an egg in each of the respective cells; and a plurality of spaced apart venting ports formed in each of the perimeter side edges of one or more of the base and