Rack Rails
A EIA-compliant industry-standard rack enclosure will have two pairs of vertical mounting rails (one pair in front, one pair in back) that conform to the EIA standard for mounting hole spacing as shown below.
Rack Rail Hole Spacing
Standard Rack Height;; 21" to 84", in any 1 3/4" increments
Standard Rack (outside) Depth;; 17", 24", 29" and 36"
Standard Panel Widths: 482.6mm (19 inch), 609.6mm, 762.0mm (per EIA 310)
Standard Panel Widths: 19", 24", 30", adapters are available for mounting 23" equipment
Equipment Rack Manufacturers
EIA-310 does not specify rack depth. So be sure to specify or know the internal depth, usable depth and overall depth.
Height is also given in 'U', 1U = 44.45mm, 2U = 88.90mm
Equipment Rack Sizing previous page in the section.
Equipment Rack Grounding next page in the section.
Index page; How To Specify a Equipment Chassis
