Lockable Storage Drawer is available for 19”W or 23”W racks and cabinets. It includes attachment brackets that allow center mounting on two-post racks with 3” or 6”D (80 mm or 150 mm) equipment channels, or front and rear attachment to four-post racks and cabinet systems with mounting rails that are adjusted between 24” and 39”D (610 mm and 990 mm).