Abstract: A corrugated paperboard insert for plastic totes includes four side walls and a bottom made from a single sheet of corrugated paperboard. The bottom comprises four interlocking flaps connected along fold lines to respective sidewalls and configured to form an auto-locking bottom that avoids the need for taping. The corrugated paperboard comprises an uncoated linerboard forming an exterior surface of the insert, a coated linerboard forming an interior surface of the insert, a corrugated sheet fixed between the outer linerboard and inner linerboard. The coated linerboard includes a water-based, moisture resistant coating that is food contact rated and recyclable with uncoated paperboard. In some embodiments, point size and/or weight of the inner linerboard is greater than a point size and weight of the outer linerboard.