While it’s called a "19-inch rack," that number refers to the width of the of the equipment (including the mounting "ears"). The actual interior space between the rails where the equipment body slides in is typically 17.75 inches . 3. Hole Spacing and Types
Understanding EIA-310: The Backbone of the Modern Data Center eia-310
While EIA-310 is the king, you will occasionally encounter variations: While it’s called a "19-inch rack," that number