Pratt PRA0022 100PK 100% Recycled Corrugated Cardboard Box, 9" Length x 6" Width x 3" Height (Pack of 100) 100 percent recycled corrugated box for packing, shipping and storing Pack of 100 corrugated cardboard boxes 32 ECT grade for standard stacking performance; Rectangular shape fits various items Made of single wall C flute corrugated fiberboard with standard Kraft color Ships flat to reduce shipping costs and storage space