21 Inch Rack Dimensions

Houses eia standard 19 inch rack equipment in 21u tripp lite s srw21u smartrack 21u low profile switch depth wall mount rack enclosure cabinet is ideal for storing 19 inch rack equipment in network closets retail locations classrooms and other areas with limited floor space where you need equipment to be secure organized and out of the way.

21 inch rack dimensions.

A device specified as 2u for example may in reality measure 3 44 inches in height rather than the 3 5 inch multiple of 1 75. As 19 inch equipment has a maximum width of 17 1 4 inches 438 15 mm they can easily be mounted in an etsi rack by means of an etsi bracket or adapter plate. While occupying the footprint of a. In the old days most rack gear was at maximum 17 wide.

Inspired by the open compute project ocp the kt 2141 121 rack meets the latest open rack standard v1 2. Equipment manufacturers now build equipment that is very wide inside the racks opting to squeeze in as much unit as possible. Measure twice and cut once. To determine rack size as 19 or otherwise measure the hole to hole spacing and compare to the table below.

Rack height is of course 1 3 4 44 45 mm precisely. Now gear just fits between the standard rails. It is most frequently used as a measurement of the overall height of 19 inch and 23 inch rack frames as well as the height of equipment that mounts in these frames whereby the height of the frame or equipment is expressed as multiples of rack units for example a typical full size rack cage is 42u. A rack unit abbreviated u or ru is a unit of measure defined as 1 3 4 inches 44 45 mm.

The srw21u smartrack 21u low profile switch depth wall mount rack enclosure cabinet is designed to house eia standard 19 inch rack equipment in network wiring closets retail locations classrooms back offices and other areas with limited floor space where you need equipment to be secure organized and out of the way. The rack or cabinet must meet the eia standard eia 310 d for 19 inch racks. Media type glass rack for use with traditional housekeeping cart color black width inch 21 length decimal inch 25 3800 material glass length mm 644 65 height mm 170 18 width mm 533 40. Interestingly no measurement on a 19 rack actually equals 19 inches.

All racks used for n series storage system installation must conform to the specifications in this section. The term 19 inch comes from the width of the front panel of the boxes that are installed in the rack see the image below. Rack units for equipment is considered maximum dimensions. Both the ibm 7014 model t00 and model t42 and the ibm 2101 model n00 racks conform but some other racks including a few from ibm do not.

In practice devices are often made slightly smaller than the specified u value to allow a little space. As 535 mm is very close to 21 inches these racks are sometimes called 21 inch racks.