Keep dense infrastructure organized, protected, and serviceable. The Eaton SR45UB 45U rack enclosure is built for secure server and networking deployments where physical protection and clean integration matter. With a 45U footprint and a 3,000 lb capacity, it is suited to heavier enterprise builds that need more than a basic cabinet. SmartRack enclosures are designed to support the realities of modern IT rooms: airflow planning, power distribution, and structured cable routing. This enclosure provides a controlled environment for mission-critical equipment while maintaining compatibility with standard EIA-310-E 19-inch hardware through vendor-neutral square-hole mounting. That makes it easier to standardize installations across mixed equipment stacks without compromising fit. For teams that care about uptime, service access, and rack discipline, this enclosure offers the structural headroom to do the job properly. It is a strong choice when you need a cabinet that can handle dense equipment loads and still leave space for the infrastructure around them.