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A pallet assembly includes an upper portion and a lower portion. The upper portion includes an upper deck for supporting items thereon and upper column portions extending downward from the upper deck. The upper column portions include a first upper column portion having a slot defined by a pair of s

A pallet assembly includes an upper portion and a lower portion. The upper portion includes an upper deck for supporting items thereon and upper column portions extending downward from the upper deck. The upper column portions include a first upper column portion having a slot defined by a pair of slot walls. The lower portion includes a plurality of lower column portions including a first lower column portion. The first lower column portion includes a peripheral wall and a support structure having a pair of walls extending inward from the peripheral wall. One of the first upper column portion and the first lower column portion is received within the other, with the support structure received in the slot between the slot walls.

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1. A pallet assembly comprising: an upper portion including an upper deck for supporting items thereon and upper column portions extending downward from the upper deck, the upper column portions including a first upper column portion having a slot defined by slot walls; anda lower portion including

1. A pallet assembly comprising: an upper portion including an upper deck for supporting items thereon and upper column portions extending downward from the upper deck, the upper column portions including a first upper column portion having a slot defined by slot walls; anda lower portion including a plurality of lower column portions including a first lower column portion, the first lower column portion including a peripheral wall and a support structure having a pair of walls extending inward from the peripheral wall, one of the first upper column portion and the first lower column portion received within the other, the support structure received in the slot between the slot walls. 2. The pallet assembly of claim 1 further including a reinforcement member received in the slot in the first upper column portion above the support structure in the first lower column portion. 3. The pallet assembly of claim 2 wherein the support structure is the same height as the peripheral wall of the first lower column portion. 4. The pallet assembly of claim 1 wherein the first upper column portion is received within the first lower column portion. 5. The pallet assembly of claim 1 wherein the first upper column portion is snap-fit connected to the first lower column portion. 6. The pallet assembly of claim 1 wherein the slot in the first upper column portion is a lateral slot and the support structure in the first lower column portion is a lateral support structure, the first upper column portion further including a longitudinal slot extending through the first upper column portion in a direction generally perpendicular to the lateral slot, the first lower column portion further including a longitudinal support structure including a pair of walls extending from the peripheral wall, the longitudinal support structure received in the longitudinal slot. 7. The pallet assembly of claim 1 further including an upper wall extending across the pair of walls of the support structure. 8. The pallet assembly of claim 1 further including a plurality of runners connecting lower ends of the plurality of lower column portions. 9. The pallet assembly of claim 1 wherein the slot walls extend inward from a periphery of the first upper column portion. 10. The pallet assembly of claim 1 wherein the slot walls are generally parallel to one another and generally transverse to an upper peripheral wall of the first upper column portion. 11. The pallet assembly of claim 1 wherein the support structure is spaced away from an upper edge of the slot in which the support structure is received. 12. The pallet assembly of claim 1 wherein the peripheral wall of the first lower column portion extends between the pair of walls of the support structure. 13. A pallet assembly comprising: an upper portion including an upper deck for supporting items thereon and a plurality of upper column portions extending downward from the upper deck, the plurality of upper column portions each having a slot defined by slot walls; anda lower portion including a plurality of lower column portions each including a peripheral wall and a support structure having a pair of walls extending inward from the peripheral wall, each of the plurality of upper column portions received within one of the plurality of lower column portions, with the support structure of each lower column portion received in the slot between the slot walls of the respective upper column portion. 14. The pallet assembly of claim 13 further including a reinforcement member received in the slots in the plurality of upper column portions above the support structures in the plurality of lower column portions. 15. The pallet assembly of claim 14 wherein the plurality of upper column portions are snap-fit connected to the plurality of lower column portions. 16. The pallet assembly of claim 13 wherein the slot in each of the plurality of upper column portions is a lateral slot and the support structure in each of the plurality of lower column portions is a lateral support structure, each of the plurality of upper column portions further including a longitudinal slot extending through the upper column portion in a direction generally perpendicular to the lateral slot, each of the plurality of lower column portions further including a longitudinal support structure including a pair of walls extending from the peripheral wall of the lower column portion, the longitudinal support structure of each of the plurality of lower column portions received in the longitudinal slot of the respective one of the of the plurality of upper column portions. 17. The pallet assembly of claim 13 further including an upper wall extending across the pair of walls of the support structure. 18. A pallet assembly comprising: an upper portion including an upper deck for supporting items thereon and a plurality of upper column portions extending downward from the upper deck, the plurality of upper column portions each having a slot defined by slot walls;a lower portion including a plurality of lower column portions each including a peripheral wall and a support structure having a pair of walls extending inward from the peripheral wall and an upper wall extending across the pair of walls of the support structure, each of the plurality of upper column portions received within one of the plurality of lower column portions, with the support structure of each lower column portion received in the slot between the slot walls of the respective upper column portion; anda reinforcement member received in the slots in the plurality of upper column portions above upper walls of the support structures in the plurality of lower column portions. 19. The pallet assembly of claim 18 wherein the slot walls extend inward from a periphery of the first upper column portion. 20. The pallet assembly of claim 18 wherein the slot walls are generally parallel to one another and generally transverse to an upper peripheral wall of the first upper column portion.