A bulk container comprises a one piece base, a cap and a peripheral side wall. The base includes a generally rectangular bottom wall, a plurality of longitudinal rails extending below the bottom wall, and a peripheral wall extending upwardly from the bottom wall. The peripheral wall defines an upwardly opening channel. The cap includes an inner wall connected to an outer wall defining a downwardly opening channel complimentary with the upwardly opening channel. The peripheral side wall is received in the upwardly opening channel and the downwardly opening channel to define a parallelepiped interior space.