High density mobile shelving allows users to reduce their floor space requirements by 50% or double their storage capacity in the existing floor space. The high density mobile shelving system may be mounted with L&T shelving, wide span shelving, cantilever shelving, cabinets, pallet rack, universal weapons racks and more. Available in three drive systems: manual, mechanical assist, and electric, the high density mobile shelving system is easily operable from 3 feet to 100 feet in length.