Vertiv GL45UG2EZ-3042-B-MSS 45U EZ Seismic Server Rack Enclosure
Overview
The Vertiv GL45UG2EZ-3042-B-MSS is a 45U, 30-inch wide by 42-inch deep black server rack enclosure from the Geist EZ Seismic line — engineered for data centers, network rooms, and critical infrastructure deployments where equipment density, physical security, and structural compliance matter. If you're speccing out a new rack row and need a reliable mid-depth enclosure that ships as a pre-configured unit rather than a field-assembly project, the GL45UG2EZ-3042-B-MSS is worth a close look. The "EZ" designation reflects Vertiv's focus on reducing installation time: fewer loose components, cleaner cable management paths, and a factory-prepared structure that goes into service faster than traditional knock-down racks.
This enclosure sits within the broader Vertiv rack and enclosure catalog and is built for environments that need predictable cable management and structured equipment mounting across multi-rack deployments. It carries the seismic rating designation that matters for data centers in earthquake zones or facilities subject to GR-63-CORE / Zone 4 seismic requirements — a non-negotiable spec for telco, colocation, and government deployments.
Key Features
- 45U Usable Height: 45U of rack space gives you room to mix high-density compute, network switching, and patch panels in a single enclosure without the compromise of a shorter 42U frame. That extra 3U over a standard rack is meaningful when you're trying to avoid a second enclosure for overflow gear.
- 30-Inch Width: The 30-inch wide frame accommodates standard 19-inch EIA-310 equipment with deeper side channels for cable runs — wider than the 24-inch option available in this family and the better choice when you're running dense power and fiber bundles vertically along the frame. Pair with vertical cable managers to take full advantage of the side channel depth.
- 42-Inch Depth: A 42-inch internal depth handles the majority of 1U and 2U server and network hardware comfortably, including most mid-depth blade chassis and storage arrays. If you're deploying deep dual-PSU servers that push past 36 inches, verify your specific chassis depth before committing — but for standard enterprise and network room gear, 42 inches is sufficient.
- EZ Seismic Construction: The seismic-rated frame design means this enclosure can be specified into facilities requiring Zone 4 seismic compliance without a custom engineering waiver. For colocation operators, healthcare systems, and government facilities, this can be the deciding factor versus a standard non-seismic rack.
- Black Finish: The GL45UG2EZ-3042-B-MSS ships in black, the standard color for most production data center environments. Vertiv also offers this frame in Winter White and Clear configurations for specialized environments (clean room, lab, or broadcast) — but for standard raised-floor and server room installs, black is the correct selection and blends with existing rack rows.
- Family Configurability: This enclosure belongs to a family that spans 42U, 45U, 48U, and 52U heights and 24-inch and 30-inch widths, with 42-inch and 48-inch depths — meaning once you standardize on this frame family, you can scale a rack row with consistent physical profiles, shared accessories, and matched blanking panels across all enclosures. Standardizing on a single frame family reduces spare-parts complexity and simplifies refresh cycles.
Integration & Compatibility
The GL45UG2EZ-3042-B-MSS accepts standard 19-inch EIA-310 rack-mount equipment across all 45U of usable space. The enclosure integrates with rack PDUs and cable management accessories from Vertiv's own product lines, and the frame geometry supports third-party vertical and horizontal cable managers that use standard mounting points. For structured network infrastructure deployments, the 30-inch width provides adequate side clearance for high-density fiber and copper cable routing without pinching bend radii on patch cables.
When planning a multi-rack row, note that the 42-inch depth variant (this unit) and the 48-inch depth variant of the same family share the same footprint width — a detail that matters for raised-floor tile alignment and hot/cold aisle containment planning. Consult your rack enclosure layout before committing to a depth if containment curtains or overhead trays are already installed. For power distribution within the enclosure, review compatible rack-mount PDU options to ensure proper phase load balancing across the full 45U.
Frequently Asked Questions
Q: What is the internal usable rack unit count on the GL45UG2EZ-3042-B-MSS?
A: The GL45UG2EZ-3042-B-MSS provides 45U of usable rack space, accommodating standard 19-inch EIA-310 rack-mount equipment.
Q: What is the depth of the GL45UG2EZ-3042-B-MSS and will it fit deep dual-PSU servers?
A: The internal depth is 42 inches, which handles most standard 1U/2U servers and network gear. Verify your specific server chassis depth if it exceeds 36 inches, as very deep dual-PSU platforms may require the 48-inch depth variant in the same family.
Q: Is the GL45UG2EZ-3042-B-MSS seismic rated?
A: Yes. The EZ Seismic designation indicates this enclosure carries a seismic rating suitable for facilities requiring Zone 4 seismic compliance, including telco, colocation, and government environments subject to GR-63-CORE standards.
Q: Does this rack come in other colors or sizes?
A: The Vertiv EZ Seismic family is available in Black, Winter White, and Clear finishes, and spans 42U, 45U, 48U, and 52U heights with 24-inch and 30-inch widths and 42-inch or 48-inch depths. The GL45UG2EZ-3042-B-MSS specifically is the 45U, 30-inch wide, 42-inch deep, black configuration.
Q: Can I use third-party rack PDUs and cable managers with the GL45UG2EZ-3042-B-MSS?
A: The enclosure uses standard 19-inch EIA-310 mounting rails and accepts compatible rack accessories from Vertiv and third-party vendors that conform to standard rack mounting geometry.
Q: What is the difference between the 30-inch and 24-inch width options in this family?
A: The 30-inch width (this unit) provides wider side channels for vertical cable runs, making it the better choice in high-density environments with substantial power and fiber bundles. The 24-inch width reduces floor footprint but limits side-channel cable management capacity.
The GL45UG2EZ-3042-B-MSS is a 45U, 30-inch-wide seismic enclosure — and that width is the spec I'd focus on first when evaluating this unit for a dense deployment. The extra clearance compared to a 24-inch frame makes a real difference when you're routing high-count fiber bundles and multi-circuit power simultaneously on the same vertical path. I've seen integrators underspec rack width on their first row and spend hours re-routing cable on every subsequent rack because side-channel space ran out.
Technical Highlights:
- 45U Height: Three additional rack units over a standard 42U frame — enough to fit an extra 1U patch panel, a power distribution unit, or a KVM switch without displacing compute. On a 10-rack row that adds 30U of reclaimed space at no additional floor footprint.
- 30-Inch Width with 42-Inch Depth: This combination targets the majority of enterprise server and networking hardware. The 30-inch frame accommodates heavy vertical cable management; the 42-inch depth covers most standard chassis without the floor-space penalty of a 48-inch-deep frame.
- EZ Seismic Rating: For any facility subject to seismic compliance requirements — California data centers, federal installations, telco central offices — this rating removes the need for a structural engineering review of the rack itself, which can add weeks and cost to a project timeline.
Deployment Considerations:
- If your hot/cold aisle containment system uses hard rear doors with a fixed depth profile, confirm the 42-inch depth of the GL45UG2EZ-3042-B-MSS aligns with your containment geometry before ordering — the 48-inch depth variant in the same family has a different rear-door clearance profile.
- The EZ Seismic family spans four heights (42U, 45U, 48U, 52U) — if you're building a mixed-height row for aesthetic or structural reasons, verify that blanking panels and shared accessories are cross-compatible between the height variants before standardizing procurement.
This enclosure is the right call for a mid-density enterprise or colocation row in a seismically active region: the 45U height maximizes usable space, the 30-inch width handles real-world cable volume, and the seismic rating satisfies compliance without a custom engineering path. It's also a practical choice for government and healthcare network rooms where Zone 4 seismic certification is a procurement requirement, not just a preference.
