Vertiv NEMA 12K WM 12UX24X24 Gray - GL24N12-24-B-AF00

Vertiv GL24N12-24-B-AF00 NEMA 12 Wall-Mount Enclosure 12U 24x24

The Vertiv GL24N12-24-B-AF00 is a wall-mount enclosure designed for compact network and equipment deployments where floor space is not available and environmental protection matters. Built to NEMA 12 standards, it guards interior equipment against dust, dirt, and dripping non-corrosive liquids — the right level of protection for IT closets, manufacturing floors, and light industrial environments without the bulk of a full NEMA 4 solution.

Overview

The GL24N12-24-B-AF00 ships in a 12U form factor with a 24-inch width and 24-inch depth, fitting a practical range of switches, patch panels, and edge computing gear in a wall-mounted footprint. The same enclosure family is available in 19U and 26U heights, and in 30-inch depth, giving you room to scale within the Vertiv enclosure line without switching vendors as your rack density grows.

Key Features

• NEMA 12 Rating: Protects against dust ingress and dripping liquids — appropriate for light industrial and telecom closet environments where a standard open frame would expose equipment to contamination.
• 12U / 24"×24" Form Factor: Twelve rack units in a 24-inch-wide, 24-inch-deep footprint — enough for a small switch stack, patch panel, and a 1U firewall without consuming floor space. Depth matches standard 1U and 2U network gear with typical cable management.
• Scalable Family (GL24N12-24-B-AF00 and siblings): The same line extends to 19U and 26U heights, and to 30-inch depth — plan your initial install here and expand within the same mounting hardware and thermal management ecosystem.
• Configurable Airflow Options: The enclosure supports fan/filter assemblies and accepts optional AC cooling rated at 1000 BTU, 1300 BTU, or 2200 BTU — meaning you can deploy this unit passively in a cool environment and add active cooling later if equipment density or ambient temperature increases. The 2200 BTU option handles serious heat loads for a wall-mount this size.
• Gray Finish: Standard gray powder coat suits most IT and light industrial environments without requiring custom paint or panel replacement.

Integration and Compatibility

The GL24N12-24-B-AF00 accepts standard 19-inch rack-mount equipment. Optional fan/filter kits and rack cooling accessories from the Vertiv GL series integrate directly without field modification. If your thermal load requires more than passive airflow, the factory-tested AC options (1000–2200 BTU) are engineered for this enclosure's footprint — not generic aftermarket add-ons. For projects requiring deeper equipment runs, the 30-inch depth variant in this family accommodates longer chassis without external cable management hacks. Pair with a rack power distribution unit sized to your equipment load for a complete wall-mount installation.

Frequently Asked Questions

Q: What is the rack unit capacity of the GL24N12-24-B-AF00?

A: The GL24N12-24-B-AF00 is a 12U enclosure. The same product family is also available in 19U and 26U configurations if you need more rack space.

Q: What are the interior dimensions of the GL24N12-24-B-AF00?

A: The GL24N12-24-B-AF00 has a 24-inch width and 24-inch depth. A 30-inch depth option is available in the same family for longer equipment.

Q: What cooling options does the GL24N12-24-B-AF00 support?

A: The enclosure accepts optional fan/filter assemblies and optional AC cooling units rated at 1000 BTU, 1300 BTU, or 2200 BTU. It can also be deployed with a clear panel (no active cooling) in low-heat environments.

Q: What is the NEMA rating of the GL24N12-24-B-AF00?

A: It is rated NEMA 12, which protects against dust, dirt, and dripping non-corrosive liquids. It is not rated for wet locations or hose-down environments (those require NEMA 4 or NEMA 4X).

Q: Can the GL24N12-24-B-AF00 be upgraded from passive to active cooling after installation?

A: Yes. The enclosure is designed to accept optional fan/filter kits and optional AC cooling units (1000–2200 BTU) as field upgrades, so you are not required to specify active cooling at the time of initial purchase.

Ted Perry

The GL24N12-24-B-AF00 is a unit I recommend specifically when a project calls for NEMA 12 protection in a wall-mount form factor — not because it is the only option, but because the configurable cooling path (fan/filter through 2200 BTU AC) means you can spec it correctly for today's equipment load and not repurchase the enclosure when density increases.

Technical Highlights:

• 2200 BTU AC Ceiling: For a 12U wall-mount, 2200 BTU is a meaningful thermal headroom — enough to handle a loaded PoE switch plus a small server in a warm utility space without relying on ambient air.
• NEMA 12 Ingress Protection: Dust and drip protection without the cost premium of NEMA 4X. Correct for light industrial and telecom-closet installs; not the right call for wash-down or outdoor-adjacent locations.
• 24"×24" Footprint, 12U: Matches the depth of standard 1U network gear cleanly. The optional 30-inch depth variant in the same family handles longer chassis if your equipment list grows before the project closes.

Deployment Considerations:

• Specify your cooling option at the enclosure order stage if the install site runs above 85°F ambient — retrofitting AC to a populated enclosure mid-project adds labor and downtime.
• NEMA 12 is not rated for outdoor or wet-location use; if the enclosure is near a loading dock door or subject to splash, step up to NEMA 4 or NEMA 4X in the Vertiv lineup.

The GL24N12-24-B-AF00 is the right call for IT closets, light-industrial control rooms, and retail back-of-house network gear where you need rated environmental protection and scalable thermal management in a compact wall-mount footprint.