Mighty Max Cart T107BLU Stackable Storage Tub, Blue Sturdy plastic tub is 6" deep x 18" wide x 30" long Can be used as a replacement or extra tub for your Mighty Max Cart Use on its own, as stackable storage in your garage, closets, or shed Tubs can be stacked 3-high on the Mighty Max Cart frame and up to 6-high on their own