Video Features Constructed from rugged, precision-molded polystyrene Can be used with compartments open, or add optional TierDrop PLUS Drawers for a neater look and confidentiality Interior dimensions of each compartment measure 10 1/8"w x 2 1/4"h x 13 5/8"d Details New TierDrop PLUS, Standard Sorters are available in 9 popular configurations.Finally, a modular sorting system with the convenience and confidentiality of having optional Drawers. New TierDrop PLUS Sorters are constructed from rugged, precision-molded polystyrene to withstand years of use. Use the Sorters with the compartments open for immediate access and viewing of contents, or if a neater look or confidentiality is desired, add to your Sorter's versatility by adding optional TierDrop PLUS Drawers (sold separately). These Standard Slot Sorters are perfect for personal, use, copier stations, or mailrooms. Interior dimensions of each compartment measure 10 1/8"w x 2 1/4"h x 13 5/8"d, perfect for storing incoming and outgoing mail, letterhead, and project envelopes.