Versatility and durability come together in this efficient organizer. Cabinet is 5/8" compressed wood with laminate finish. Shelves form 9w x 11 1/2d x 2 1/4h letter size compartments, adjustable in 2 1/2" increments. Black plastic molding complements finish and doubles as a convenient labeling area (labels included). Each hardboard shelf holds up to 15 lbs. Mix and match stackable units. Solid fiberboard back. Literature Sorter Type: Open Front; Number of Compartments: 36; Compartment Size: Letter.