Custom server cabinets and server racks are used to store computer server equipment. They allow for dense hardware configurations without occupying excessive floorspace or requiring shelving. Placed on these Dell server racks are usually equipment. The height of the electronic modules is also standardized as multiples of 1.75 inches or one rack unit or U. The industry standard rack or custom server cabinets is 42U tall. Nineteen inch server racks are often used to house professional audio and video equipment, including amplifiers, effects units, interfaces, headphone amplifiers, and even small scale audio mixers. Custom server cabinets and server rack enclosures are also widely used for computer server equipment, allowing for dense hardware configurations without occupying excessive floorspace or requiring shelving. Another common use for equipment and server rack shelves is for industrial power, control, and automation hardware. Fiber plastic server racks were patented in the 1960s and became widely used in military and commercial applications for electronic deployment and operation. Today’s new and used server racks and cases are now also constructed of thermo stamped composite, carbon fiber and DuPont’s Kevlar for demanding military and commercial uses. Custom server cabinets and computer racks can help a company achieve not only the proper functionality for its IT system, but also design and aesthetic goals.