The Homak Manufacturing Modular Storage System features 11 pieces that fit together in numerous configurations. The units include a 36" four-drawer cabinet, an 18" three-layer shelf, an 18" one-door cabinet, a 36" two-door cabinet, an 18" five-drawer cabinet, an 18" four-drawer cabinet, an 18" locker, a 36" three-layer shelf, a 36" three-drawer cabinet and stainless steel tops in both 18" and 36". All items lock together with connector pieces or wall-mounting hardware. All the cabinet and locker units feature the HMC high-security, tubular locking system. Ball-bearing drawer glides and EVA foam mats are included in every drawer. The storage system comes with a five-year limited warranty.