Which 42U Server Rack Is Right for You?
Feb 5th 2026
Choosing a 42U server rack might seem straightforward, but there are several factors that can significantly impact deployment, maintenance, and future scalability. Before selecting a rack, IT teams should consider:
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Depth and width for current and future servers, power, cooling, and other accessories
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Load capacity for fully populated racks
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Airflow and cooling requirements
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Accessory compatibility, including PDUs, cable management, and KVMs
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Installation and operational flexibility
Understanding how these elements differ across models helps prevent costly adjustments later.
Below, we’ve compiled a side-by-side comparison of some of the top 42U enterprise server racks. Each row highlights the key specifications and features to consider when making a decision for your datacenter.
Top 42U Enterprise Server Rack Comparison
Feature / Rack |
 |
 |
 |
 |
|---|---|---|---|---|
| APC AR3100 | Great Lakes L Series | Rittal TS IT | Eaton SRH422454W | |
| RMU (Rack Units) | 42U | 42U or 47U | 42U | 42U |
| Height (inches) | 78.39″ | 77.9″ (42U) or 87.25" (47U) | 78.7″ | 79.5″ |
| Width (inches) | 23.62″ | 24" or 32" | 23.6″ | 23.62″ |
| Depth (inches) | 42.13″ | 42" or 48" | 47.2" | Up to 54" (configurable) |
| Max Load Capacity | 4000lb static / 2250lb dynamic | 3000 lb static | 3400 lb static | 5000 lb static / 3500 lb dynamic |
| Front Door | Perforated | Mesh front | Plexiglass | Perforated |
| Rear Door | Perforated | Split mesh rear | Solid | Perforated |
| Side Panels | Removable | Removable | Removable | Removable |
| Accessory Support | Standard rails & PDU mounts | Standard rails & PDU mounts | Standard rails & PDU mounts | Standard rails & PDU mounts |
| Best For | Widely used enterprise baseline | Budget Friendly, Flexible depth/width for cable and airflow | Balanced enterprise rack | Narrow footprint installations, Great for Extra-Deep Requirements |