Steel Shelving Storage Unit Cabinet. Let’s organize your home, office, or garage with heavy duty metal shelving.. Adding a steel storage cabinet provides more space for tools, supplies and accessories and is an easy way to help keep your home or office neatly organized. This 4-shelf storage cabinet comes with an adjustable design that can accommodate large or unusually shaped items. Shelves adjust by 50 %” increments and deal with 100 lb each. Doors lock to help keep things private and secure. A magnetic catch keeps the doors shut, even if unlocked. Cabinets meet or exceed ANSI standards. Assembly required. Instructions included.