Vertiv VR3300 42U Server Rack Enclosure
Overview
The Vertiv VR3300 is a 42U steel server rack enclosure engineered for data center, network closet, and high-density compute environments where structural integrity and thermal management both matter. Built to EIA 310E dimensional standards, it fits standard 19-inch rackmount equipment without adapter kits — a practical requirement when you're staging a mixed-vendor server and networking build. The VR3300 ships with a single perforated front door and split rear doors, a configuration that simplifies rear cable access during installation and maintenance without requiring you to fully swing open a single large panel in a tight row.
This is a server rack built for deployments where load capacity and compliance certification are non-negotiable line items on the procurement checklist — not afterthoughts.
Key Features
- 42U Usable Height: 42U of rack space accommodates a full production stack — servers, top-of-rack switches, patch panels, and a KVM — without splitting across two enclosures. That's the difference between a clean single-rack pod and a two-rack footprint with cross-cabinet cabling.
- 3,000 lb Static / 2,250 lb Dynamic Load Rating: The VR3300 handles 3,000 lbs (1,360 kg) static and 2,250 lbs (1,022 kg) dynamic — relevant if you're running blade chassis, high-density storage arrays, or stacked UPS units. Most 2-post open frames cap out well below this; if your rack load calculation is pushing past 1,500 lbs of hardware, this enclosure has the margin.
- Single Perforated Front Door + Split Rear Doors: The perforated front door supports front-to-rear airflow for active cooling systems and maintains positive pressure in hot-aisle/cold-aisle containment rows. Split rear doors let technicians access the top and bottom halves of the rear independently — useful in dense rows where swinging a full rear panel requires moving adjacent equipment.
- Steel Construction with Powder Coat Finish: The all-steel frame with powder-coated finish resists corrosion in controlled environments and provides the structural rigidity that sheet-aluminum alternatives can't match at high load ratings. For permanent installs, this matters over a 10+ year equipment lifecycle.
- EIA 310E Compliance: EIA 310E defines the 19-inch rack standard — mounting hole spacing, rail dimensions, and U spacing. EIA 310E compliance means any standard rackmount equipment drops in without shimming or custom brackets.
- UL2416 Listed: UL2416 is the safety standard for rack enclosures. UL listing is a hard requirement for many data center facility teams and a common ask in enterprise procurement. If your building management or insurance carrier requires UL-listed enclosures, the VR3300 covers that.
- RoHS and REACH Compliant: RoHS and REACH compliance matters for any deployment going into an EU-regulated environment or a corporate sustainability program that screens for restricted substances. It also simplifies end-of-life disposal documentation.
Integration and Compatibility
The VR3300 integrates with standard 19-inch rackmount equipment across vendors — servers, network switches, patch panels, KVM drawers, power strips, and rackmount UPS units all mount to EIA 310E-standard rails. The 42U height aligns with common data center rack unit planning. Browse the full Vertiv rack and enclosure catalog for compatible power distribution, cooling, and cable management accessories.
For rackmount PDUs and in-rack UPS units, verify rear door clearance against the depth of your power equipment — split rear doors help here but confirm depth specifications match your equipment's exhaust requirements. Pair with managed network switches for top-of-rack deployments and consider horizontal and vertical cable managers to maintain organized cabling at 42U density.
Frequently Asked Questions
Q: What is the load capacity of the Vertiv VR3300?
A: The VR3300 is rated for 3,000 lbs (1,360 kg) static load and 2,250 lbs (1,022 kg) dynamic load. Static rating applies to stationary installations; dynamic rating applies when the rack is being moved on casters.
Q: Is the VR3300 compatible with standard 19-inch rackmount equipment?
A: Yes. The VR3300 is EIA 310E compliant, which defines the 19-inch rack standard for mounting hole spacing, rail dimensions, and U spacing. Standard rackmount equipment from any major vendor installs without adapters.
Q: What certifications does the VR3300 carry?
A: The VR3300 is certified to EIA 310E, UL2416, RoHS, and REACH. UL2416 is the enclosure safety standard required by many enterprise and data center facilities teams.
Q: What door configuration does the VR3300 use?
A: The VR3300 ships with a single perforated front door and split rear doors. The perforated front supports airflow for active cooling; split rear doors allow independent top and bottom rear access without requiring full door clearance behind the rack.
Q: What material and finish does the VR3300 use?
A: The VR3300 uses all-steel construction with a powder-coated finish, providing structural rigidity and corrosion resistance for permanent data center installations.
Q: Is the VR3300 RoHS compliant?
A: Yes. The VR3300 is both RoHS and REACH compliant, meeting EU restricted substance requirements for deployments in regulated environments or corporate sustainability programs.
The VR3300 gets specified a lot in enterprise and colocation builds because that 3,000 lb static load rating gives you real headroom for high-density storage or blade chassis without having to stress-test the enclosure spec against your equipment manifest. I've seen plenty of 42U racks rated for 1,500 lbs that start flexing rails when you stack four blade chassis and a pair of 2U UPS units — the VR3300 doesn't have that problem.
Technical Highlights:
- 3,000 lb Static Load: At 1,360 kg rated static capacity, this enclosure handles fully loaded blade chassis, high-density storage arrays, and stacked UPS configurations without rail flex — a meaningful margin over lighter-duty alternatives in the same U count.
- UL2416 Listing: UL2416 certification satisfies the hard requirements from facility management and insurance carriers that won't accept unlisted enclosures in raised-floor environments. It's a procurement gate item, not a nice-to-have.
- Perforated Front Door: The perforated front isn't cosmetic — it's engineered for front-to-rear airflow compatibility with active cooling rows. Solid-door alternatives block CFD-designed airflow patterns and raise inlet temps under load.
Deployment Considerations:
- Split rear doors are a real advantage in tight rows — they let technicians service the upper and lower rear of the rack without full door clearance behind, which matters in rows with less than 3 feet of rear aisle depth.
- The dynamic load rating of 2,250 lbs (1,022 kg) applies when moving on casters — if your equipment load is close to that ceiling, roll the rack empty, stage hardware on-site. Don't push the dynamic rating with a full load across uneven raised flooring.
The VR3300 is the right call for enterprise server rooms and colocation cage deployments where load capacity documentation, UL listing, and EIA 310E compliance are all required at procurement — particularly in financial services or healthcare environments where facility standards are enforced rather than suggested.
