19" Server & Equipment Racks
Racks and enclosures form the primary structure of an installation, and provide the frame to support electronic equipment, power, cooling, and cable management. 19" equipment racks are measured in rack units, which is abbrieviated to U. One U is 1.75 inches (44.45mm). Racks have a specific amount of rack units available known as rack space. All of the accessories and hardware that are designed to fit of the rack are made in multiples of 1.75 inches and specified in rack units, such as, 1U, 2U, 3U etc. These rack units make is easier to design an equipment rack by adding up all of rack units of the accessories you need to see if they will fit, making sure you leave room in between shelves for your electronic equipment.
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