Offex Corrugated Cardboard 9 Roll File Storage Manager Easy and Economical to Use. Ideal for Organizing Plans in Office. Individual Slots to Organize Documents. Ideal for Permanent Storage. Sturdy, Attractive White Corrugated Cardboard with Deep Grey Lettering. Reinforced Bottom to Prevent Breakthrough. Labeled Top & Front for Easy Identification. Stack Side by Side or on top of each other.