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But you also need to consider the external width of the. rack. The standard width for rack enclosures is 24 inches or 600 mm, which corresponds to the standard for removable floor. tiles in a raised-floor data center. Extra-wide rack enclosures (30 inches or 750 mm) are also available, with or without extra.
A Rack Unit or Rack U is an EIA standard allowance unit for measuring rack mount equipment. One Rack Unit is equal to 1.75 in height. To calculate internal useable space of a rack enclosure, simply multiply the total amount of Rack Units by 1.75. For example, a44U rack enclosure would have 77 of internal usable space (44 x 1.75). Click here to choose racks by height.