Rack shelf is engineered to provide secure mounting of non-rackmount equipment in 19-inch wide equipment racks and cabinets. The shelf is ideal for consumer electronics, power supplies and chassis-style components. The clamps have a protective rubber strip to prevent marring of equipment. Two adjustable rear stops help hold components in place when buttons or controls are depressed. It is made from 16-gauge steel and has a front and rear flange for added strength. Bottom rear is vented and includes openings to adjust angle-bracket stop devices. Sides feature obround slots to adjust height of hold-down brackets.