Vertiv NEMA 12K WM 12UX24X30 Gray - GL24N12-30-B-AF00

Vertiv GL24N12-30-B-AF00 12U NEMA 12 Wall-Mount Enclosure

The Vertiv GL24N12-30-B-AF00 is a NEMA 12-rated wall-mount enclosure sized at 12U (24" H) with a 24" width and 30" depth — built for housing active network and security equipment in light-industrial environments where dust and non-directed moisture are operational realities. If you need a compact, wall-mounted home for edge switches, patch panels, or security controllers in a production floor, utility corridor, or server anteroom, this is a cabinet worth looking at closely.

Overview

Wall-mount enclosures in the NEMA 12 class are the right call when you want IP-equivalent dust and drip protection without committing to a floor-standing rack. The GL24N12-30-B-AF00 ships in gray and is designed for fixed-wall installation, keeping gear off the floor and out of traffic paths. The 30" depth accommodates standard 1U and 2U equipment with cabling room behind — a meaningful consideration when you're routing conduit or structured cabling in tight back-of-wall spaces. For those researching the Vertiv enclosure catalog, this unit sits in the GL-series wall-mount line targeting distributed IT and edge deployments.

Key Features

• 12U Usable Space (24" H): Twelve rack units is enough for a PoE switch, patch panel, UPS, and a couple of access control or security appliances — common configurations in remote IDF closets and perimeter security nodes. You're not fitting a full server stack here, but that's not what this form factor is for.
• 30" Depth: Deeper than the 24" option, which matters when you're mounting full-depth switches or need cable management trays behind equipment. The extra 6" prevents the cable crush that plagues shallow enclosures when someone retrofits a 28" switch.
• NEMA 12 Rating: Protection against dust, falling dirt, and dripping or splashing water from any direction — suitable for light-industrial areas, mechanical rooms, and warehouse edge nodes where a standard open-frame rack would collect contamination. Not rated for outdoor or wet-location use; if you need outdoor-grade protection, step up to a NEMA 4X-rated enclosure.
• Flexible Airflow Options: The enclosure supports fan/filter kits, optional 1000 BTU AC, 1300 BTU AC, or 2200 BTU AC cooling units, or a clear (unventilated) door configuration. This means you can match the thermal solution to your actual heat load: passive for low-draw passive gear, a fan kit for 200–400W switch loads, or a 2200 BTU AC unit for a fully populated chassis in a warm mechanical room. Match your BTU selection to the total wattage of installed equipment — undersizing here is the most common site commissioning error on wall-mount deployments.
• Gray Finish: Standard gray matches the majority of commercial and light-industrial finish environments. Not a cosmetic note — it matters in facilities where enclosures are customer-facing or in visible corridors.

Integration & Compatibility

The GL24N12-30-B-AF00 is EIA 310-D compatible for standard 19" rack-mount equipment. The 30" interior depth supports full-depth 1U and 2U appliances. Cooling accessories (fan/filter kits, AC units up to 2200 BTU) are offered as options within the Vertiv wall-mount enclosure accessory ecosystem — confirm part numbers with Vertiv's accessory catalog before ordering if you need a specific BTU rating at time of purchase. For deployments pairing this enclosure with active PoE infrastructure, review your PoE switch selection alongside the enclosure's thermal load to size the cooling option correctly. If you're building out a physical security edge node, this enclosure pairs naturally with access control panels and managed switches in the same 1U–2U form factor. Buyers deploying in data-sensitive environments should also consult a physical security planning guide to confirm enclosure placement relative to egress and compliance requirements. For a broader look at wall-mount enclosures, the category page covers comparable options across depth and U-count configurations.

Frequently Asked Questions

Q: What is the usable rack height of the GL24N12-30-B-AF00?

A: The GL24N12-30-B-AF00 provides 12U of usable rack space, corresponding to a 24" interior height. The same GL enclosure family is also available in 19U (36" H) and 26U (48" H) configurations if you need more capacity.

Q: What cooling options are available for this enclosure?

A: The enclosure supports a fan/filter kit, optional AC units rated at 1000 BTU, 1300 BTU, or 2200 BTU, or a clear (unventilated) door. Select the cooling option based on the total wattage of installed equipment — Vertiv's general guideline is to convert watts to BTU/hr (1W ≈ 3.41 BTU/hr) and choose the next tier up for headroom.

Q: Is the GL24N12-30-B-AF00 rated for outdoor installation?

A: No. NEMA 12 is rated for indoor light-industrial use — it protects against dust and non-directed moisture but is not rated for outdoor, wet-location, or corrosive environments. For outdoor installations, a NEMA 4 or NEMA 4X enclosure is the correct specification.

Q: What interior depth does this enclosure provide?

A: This model ships in the 30" depth configuration, which accommodates full-depth 1U and 2U rack-mount equipment with room for cable management. The GL-series is also available in a 24" depth variant for locations where projection off the wall is constrained.

Q: What rack equipment width does this enclosure accept?

A: The GL24N12-30-B-AF00 is designed for standard 19" EIA 310-D rack-mount equipment, consistent with the industry standard for 1U and 2U appliances, switches, patch panels, and security controllers.

Ted Perry

The GL24N12-30-B-AF00 is the version of this wall-mount I spec when a customer needs the 30" interior depth — the 24" variant sounds like enough until someone tries to land a full-depth managed switch and realizes there's no room for a cable management arm. The 6" difference between depth options is one of those specs that seems minor until you're on a ladder at a job site.

Technical Highlights:

• NEMA 12 Enclosure Rating: Dust-tight and drip-resistant — handles the typical light-industrial environment (concrete dust, HVAC condensation, forklift traffic) without the overkill cost of a NEMA 4X stainless unit. Right-sized for most IDF-in-a-warehouse or security-node deployments.
• Scalable Cooling to 2200 BTU: The three AC tiers (1000/1300/2200 BTU) let you right-size thermal management to the installed load. A 24-port PoE+ switch at full load can push 400W+ — that's roughly 1,365 BTU/hr, so the 1300 BTU option is already marginal. Size up when in doubt.
• 12U at 30" Depth: Enough space for a managed PoE switch, patch panel, a small UPS, and a security appliance — the standard edge IDF loadout — without the footprint of a floor-standing rack.

Deployment Considerations:

• Confirm wall-stud or unistrut anchor capacity before installation — a fully populated 12U enclosure with a 2200 BTU AC unit is a significant static load. Drywall anchors alone are not adequate for commercial deployments.
• The GL24N12-30-B-AF00 cooling option must be selected at order time if you want AC — field-retrofitting an AC unit to a clear-door or fan-only enclosure requires verifying the specific AC module compatibility with this GL-series chassis before purchasing separately.

This enclosure is the right call for a perimeter security IDF node or warehouse edge switch location where NEMA 12 protection is specified, full-depth equipment is in the BOM, and thermal load justifies active cooling — not for open-office or data-center environments where open-frame or fully enclosed server racks are the better fit.