| Rack Units | Inches | Millimeters | | :--- | :--- | :--- | | 1U | 1.75 | 44.45 | | 2U | 3.50 | 88.90 | | 4U | 7.00 | 177.80 | | 42U | 73.50 | 1866.90 | | 48U | 84.00 | 2133.60 |
The EIA310D standard PDF is a widely available document that provides detailed specifications for electronic components. The PDF document typically includes: eia310d standard pdf