Abstract: A partition for a box includes at least two flat walls, at least one corrugated wall, and a baseboard. The corrugated wall has a plurality of alternating box-like formations. The baseboard has two central portions symmetrically separated by a first folding line, two opposed outer flaps, and two opposed end flaps. Combined rows of flat and corrugated walls are adhered to inner faces of the outer flaps by outer faces of the outermost flat walls. The combined baseboard, corrugated walls and flat walls can be folded to a very compact state by folding the baseboard about the first folding line such that the corrugated and flat walls are compressed.