What Is Rack Standard?

The “rack” is a system for mounting devices inside cabinets and open frames. It is follow19inch EIA310standardized, and thanks to that, knowing the given device has rack-sized chassis, you can be certain it will fit into your cabinet.

Rack unit dimension definition
Rack unit dimension definition

Installation Width

Based in inch: the common standard is 19inch, but for Some devices for small installations may use 10″ width, and some huge severs data cabinet may be built in 21″ width.

Height in U units – nominal height
Installation Width

Height in U units – nominal height

For 19inch EIA standardization purposes, installation height in rack cabinets is based in U units, that can be used in every cabinet. 1U is 1,75inch, which is 44,45mm. Most cabinet and rack installed accessories available from 1U to 6U height.

Installation Width
Height in U units – nominal height