Vertiv GL840N12-3042-SS-AFA3-SQM6 45U NEMA Data Cabinet
Overview
The Vertiv GL840N12-3042-SS-AFA3-SQM6 is a 45U NEMA data cabinet measuring 30 inches wide by 42 inches deep in a black steel finish — a standard-footprint enclosure built for dense IT deployments where rack height, cable management room, and enclosure integrity all matter at once. At 45U, this cabinet comfortably accommodates a full complement of 1U and 2U servers, switches, patch panels, and power distribution units without forcing compromises on spacing or airflow planning. The 30-inch width is the industry-standard dimension that aligns with raised-floor tiles, hot-aisle containment systems, and most pre-cut cable pathways — meaning this cabinet drops into a planned data center row or server room without retrofit headaches. If you are specifying a data cabinet for a mid-to-large server room, edge deployment, or network closet, the GL840N12-3042-SS-AFA3-SQM6 addresses the three dimensions buyers compare first: height, width, and depth.
Key Features
- 45U Rack Height: 45U gives you enough vertical real estate to populate a full rack with 1U switches, 2U servers, 1U patch panels, and still leave room for a top-of-rack PDU — typical fully-loaded racks consume 35–42U, so the extra headroom is real buffer, not marketing math. If you consistently fill racks to 42U or beyond, the additional three units prevent the forced choice of leaving gear on the floor.
- 30-Inch Cabinet Width: The 30-inch width is the dominant standard in structured cabling deployments and pairs correctly with standard 600mm raised-floor tiles. Wider than a 19-inch open frame but narrower than a 36-inch wide-body, the 30-inch footprint lets you fit two cabinets side-by-side in a standard 7-foot aisle without violating NFPA or TIA hot-aisle clearance minimums.
- 42-Inch Cabinet Depth: The 42-inch interior depth is the spec that determines whether your longest 1U servers actually fit with cable dressing room to spare. Most 1U rack-mount servers run 28–32 inches in chassis depth; at 42 inches of interior clearance, you retain 10+ inches of rear cable management space — enough to properly route power and data without bending connectors or blocking airflow.
- Black Steel Finish: The black powder-coat finish is standard for data center environments and co-locates visually with standard PDUs, blanking panels, and Vertiv infrastructure products. Beyond aesthetics, a consistent cabinet color simplifies asset photography and row-level documentation in managed facilities.
- NEMA Enclosure Classification: The NEMA designation indicates this cabinet is constructed to defined enclosure standards for the IT environment — relevant for facilities that require documented enclosure compliance for audit, insurance, or lease purposes. This is not an open-frame relay rack; it is a fully enclosed cabinet with managed access.
- Commercial-Grade Construction: Vertiv's data cabinet line is built for commercial and enterprise deployments, not homelab or light-duty closet use. The steel gauge and hardware tolerances are sized for populated racks that can approach 1,500–2,000 lbs of equipment plus cabling — plan floor load accordingly when specifying in older facilities.
Integration and Compatibility
The GL840N12-3042-SS-AFA3-SQM6 (often searched as GL840N12 3042 SS AFA3 SQM6) is designed to accept standard 19-inch EIA-310 rack-mount equipment, which covers virtually all enterprise servers, switches, storage arrays, KVM units, and power distribution products from any major vendor. The 42-inch depth accommodates deep chassis from Dell, HPE, Cisco, and comparable platforms without modification. This cabinet pairs naturally with Vertiv's own PDU and cooling product lines, and integrates into hot-aisle/cold-aisle containment configurations common in network cabinets and rack enclosures. When deploying in a raised-floor environment, verify that your floor tile cut-outs and cable entry points align with the 30-inch footprint before securing the cabinet — the standard 600mm tile dimension maps directly. For data center infrastructure planning, this cabinet's dimensions allow for standard two-post PDU mounting on the rear verticals and cable management panels on side channels, provided those accessories are ordered separately.
Frequently Asked Questions
Q: What rack unit capacity does the GL840N12-3042-SS-AFA3-SQM6 provide?
A: The GL840N12-3042-SS-AFA3-SQM6 provides 45U of rack space, which is sufficient for dense server, switch, storage, and power distribution deployments with room to spare compared to a standard 42U cabinet.
Q: What are the external dimensions of this Vertiv data cabinet?
A: The cabinet is 30 inches wide and 42 inches deep. Height corresponds to a 45U rack enclosure. These are the primary footprint dimensions for floor planning and raised-floor tile alignment.
Q: Will standard 1U servers with long chassis fit in the GL840N12-3042-SS-AFA3-SQM6?
A: The 42-inch depth provides interior clearance well beyond the 28–32-inch chassis depth of most 1U rack-mount servers, leaving meaningful space for rear cable management without bending connectors or blocking airflow paths.
Q: Is this cabinet compatible with standard 19-inch EIA-310 rack equipment?
A: Yes. The GL840N12-3042-SS-AFA3-SQM6 is designed around the standard 19-inch EIA-310 rack mounting specification, which covers servers, switches, patch panels, KVM units, UPS, and PDU products from all major enterprise vendors.
Q: Does this cabinet include PDUs, cable management panels, or blanking panels?
A: Based on available evidence, accessory items such as PDUs, cable management panels, and blanking panels are not confirmed as included in the box. These should be specified and ordered separately for a complete deployment.
Q: What color is the GL840N12-3042-SS-AFA3-SQM6?
A: The cabinet ships in black, consistent with standard data center and network room deployments and compatible with the finish of most enterprise rack accessories.
When I spec a cabinet for a mid-density server room build-out, the 42-inch depth on the GL840N12-3042-SS-AFA3-SQM6 is the dimension I focus on first — it is the one that separates a cabinet you can actually cable from one that becomes a rats' nest after the first service call. At 42 inches of interior depth, you have enough room behind a fully-populated server row to maintain bend-radius compliance on Cat6A and fiber patch cords without resorting to J-hooks zip-tied to power cabling.
Technical Highlights:
- 45U Rack Height: Three additional rack units over a 42U standard may sound minor, but in practice those units become home for a top-of-rack 1U managed switch or a spare UPS shelf that would otherwise have to break into the next cabinet or land on the floor.
- 30-Inch Width: This aligns directly with 600mm raised-floor tile standards — no partial tile cuts, no cable tray offsets. In planned data center rows it means the cabinet footprint is predictable and the hot-aisle containment door geometry works as specified without field modification.
- Black Steel Finish: In managed co-lo environments and enterprise server rooms with photo-documented asset inventories, a consistent black finish across cabinet rows reduces ambiguity in rack-position photography and simplifies remote hands coordination when you are not physically on site.
Deployment Considerations:
- The 30-by-42-inch footprint plus door swing and cable management channels means your actual aisle clearance planning should assume at least 36 inches front and rear for code-compliant maintenance access — verify with your facilities team before locking in the row layout.
- A fully populated 45U cabinet with high-density 2U servers and dual-corded power can easily exceed 1,500 lbs. Confirm your raised floor tile loading rating and seismic anchoring plan before populating — this is the gotcha that gets facilities teams after the equipment is already racked.
The GL840N12-3042-SS-AFA3-SQM6 is the right call for a planned enterprise server room or edge data hall where you need a documented NEMA enclosure, standard tile alignment, and enough depth to keep rear cabling serviceable without a second technician holding cables out of the way.
