Wood Mail Sorter with Adjustable DividersStudy sorter made of compressed wood with adjustable hardboard dividers. Stack up to two high. Black plastic molding accent doubles as a label holder (labels included). Durable laminate finish complements any setting. Solid fiberboard back provides stability. Literature Sorter Type: Open Front Mail; Number of Compartments: 36; Compartment Size: 4 7/8 x 11 3/4 x 5.