Store, sort & organize. Sturdy, compact organizer is designed for unequaled strength. Double sidewall steel cabinet features steel shelves & dividers & a solid fiberboard back. No exposed nuts & bolts. Provides ample labeling space on shelf front. Letter-size compartments measure 9" wide x 12-1/4" deep x 3" high. Steel construction offers a baked enamel finish & is made with a high percentage of recycled material.