Premium steel unit has strong frame, shelves and dividers with solid fiberboard back. Interlocking design of the shelves and dividers add extra strength to hold the heaviest load. Wide fronts serve as generous label holders. Unit can be placed on the floor, desk or table or mounted to the wall with the optional Wall Mount Brackets (9200BL). Available in gray enamel finish. Fast and easy assembly. 12 compartment storage unit holds 18,000 sheets. 24 compartment holds 28,000 sheets. 30 compartment holds 46,000.