Why are racks 19 inches?

## Why are racks 19 inches?

Racks are 19 inches wide because they were initially designed to fit the standard width of electronic equipment, specifically telecommunications and networking equipment, which is commonly 19 inches wide. The 19-inch width standard for racks dates back to the early 20th century when the Bell System in the United States established it as the standard width for their equipment.

## Why is the 19-inch width standard used for electronic equipment?

The 19-inch width standard for electronic equipment racks was established by the Bell System in the early 20th century. This standardization allowed for uniformity in the design and installation of telecommunications and networking equipment, making it easier for equipment from different manufacturers to fit into the same rack. .

The 19-inch width also provides enough space for connectors, cables, and airflow between equipment when installed in a rack. This standardization ensures that equipment is compatible with a wide range of racks and allows for easy upgrades and replacements without the need for custom-made racks.

In addition, the 19-inch width standard has been widely adopted by manufacturers of electronic equipment around the world, further solidifying it as the standard for rack-mounted equipment. This widespread adoption has made it easier for companies to source compatible racks for their equipment and has facilitated interoperability between different systems.

Overall, the 19-inch width standard for racks has become ingrained in the industry as the standard for electronic equipment due to its origins in the telecommunications industry, its practical benefits in installation and compatibility, and its wide adoption by manufacturers globally.

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