Pratt PRA0121 Recycled Corrugated Cardboard Single Wall Standard Cube Box with C Flute, 20" Length x 20" Width x 20" Height, (Pack of 10) 100 percent recycled corrugated box for packing, shipping, and storing 32 ECT grade for standard stacking performance Cube shape fits various items Made of single wall C flute corrugated fiberboard with standard kraft color Shipped flat to reduce shipping costs and storage space