Computer cabinets are fitted with doors and side panels (which may or may not be removable). Cabinets enclose a rack, which is a frame that provides a means for mounting electronic equipment. Cabinets come in a variety of styles, colors, and many contain baffles, fans, and other features.
The terms rack and cabinet are often used interchangeably, which is incorrect. The rack refers specifically to the frame that provides a means for mounting electronic equipment, while a cabinet is fitted with doors and side panels.
See also computer rack.