Vertiv NEMA 12K WM 12UX24X24 Gray - GL24N12-24-B-AC00

Vertiv GL24N12-24-B-AC00 NEMA 12 Wall-Mount Enclosure

The Vertiv GL24N12-24-B-AC00 is a NEMA 12 rated, 12U wall-mount enclosure with a 24-inch depth, finished in gray — built for industrial and commercial network, security, and control equipment deployments where floor space is limited and environmental protection from dust and dripping water is required. It is part of the Vertiv Vertiv enclosure and rack portfolio, a broad line covering wall-mount, open-frame, and floor-standing configurations.

Overview

The GL24N12-24-B-AC00 ships in a 12U configuration (24-inch height) and accepts a 24-inch depth chassis — sized for compact equipment rooms, wiring closets, and utility areas where a full-height floor rack would be impractical. The enclosure is designed to accommodate wall-mount network and security hardware including patch panels, PoE switches, NVRs, and access control panels. The NEMA 12 rating means the enclosure is sealed against circulating dust, lint, and dripping non-corrosive liquids — the right baseline for light-industrial and commercial indoor environments, though not suited for outdoor or wash-down applications.

Key Features

• NEMA 12 Enclosure Rating: Provides dust and drip protection suitable for manufacturing floors, utility rooms, and commercial mechanical spaces — keeps circulating particulates off sensitive electronics without requiring a full NEMA 4 sealed unit.
• 12U / 24" x 24" Form Factor: The 12U height combined with 24-inch depth accommodates most 1U–2U security appliances and network gear while keeping wall footprint compact — practical in corridors and closets where a rack cabinet would obstruct egress.
• Flexible Airflow Options: The AC00 suffix indicates the unit ships without an integrated cooling unit, but the enclosure is pre-configured to accept optional fan/filter assemblies or optional air conditioner units (up to 1000, 1300, or 2200 BTU rated models) — letting you right-size thermal management after installation rather than paying for cooling capacity you may not need.
• Optional Cooling Scalability: With three AC tiers available (1000 BTU, 1300 BTU, 2200 BTU), the enclosure scales from lightly loaded patch/switching deployments to densely populated NVR or controller setups where heat buildup would otherwise shorten equipment lifespan.

Deployment Considerations

This enclosure fits best in light-industrial or commercial security and IT closet applications. If your site requires outdoor installation or exposure to water jets or corrosive atmospheres, step up to a NEMA 4 or 4X rated enclosure. For heavier equipment loads or deeper chassis, Vertiv offers 30-inch depth variants in the same family. Pair this with a compatible PoE switch and structured cabling to build a self-contained security distribution point. For larger deployments requiring more rack units, evaluate the 19U or 26U height options available in this enclosure line.

Frequently Asked Questions

Q: What does the AC00 suffix mean on the GL24N12-24-B-AC00?

A: The AC00 designation indicates the enclosure ships without a factory-installed air conditioning unit. The enclosure is pre-configured to accept optional fan/filter assemblies or optional AC units (1000 BTU, 1300 BTU, or 2200 BTU models) as add-on accessories.

Q: What is the U height of the GL24N12-24-B-AC00?

A: The GL24N12-24-B-AC00 is a 12U enclosure (24-inch overall height). The same enclosure family is available in 19U (36-inch) and 26U (48-inch) configurations if additional rack space is needed.

Q: Is this enclosure rated for outdoor use?

A: No. The NEMA 12 rating covers circulating dust, lint, and dripping non-corrosive liquids — it is an indoor rating. Outdoor or wash-down environments require a NEMA 4 or 4X rated enclosure.

Q: What depth chassis does the GL24N12-24-B-AC00 support?

A: The GL24N12-24-B-AC00 is the 24-inch depth variant. A 30-inch depth option is available in the same family for deeper equipment.

Q: Can I add active cooling after installation?

A: Yes. The enclosure accepts optional fan/filter assemblies and optional air conditioner units rated at 1000 BTU, 1300 BTU, or 2200 BTU, allowing thermal management to be added or upgraded without replacing the enclosure.

Karl Wilson

The GL24N12-24-B-AC00 is one of the more practical enclosure choices I see specified for compact security deployments — the 12U/24-inch depth footprint hits the sweet spot for a wall-mounted NVR, managed PoE switch, and patch panel in a single box, and the AC00 variant lets you defer the cooling decision until you know the actual heat load from the installed equipment.

Technical Highlights:

• NEMA 12 Rating: Dust and drip-proof for indoor industrial and commercial environments — appropriate for mechanical rooms, light-manufacturing floors, and utility closets where particulate contamination is a concern but full weatherproofing is not required.
• Modular Cooling Architecture (up to 2200 BTU): The tiered optional AC system (1000/1300/2200 BTU) means you can start with a passive or fan-filtered configuration and add a rated cooling unit if equipment density increases — avoids over-provisioning on day one.
• Dual Depth Availability (24" / 30"): The 24-inch depth in this SKU handles most 1U security appliances comfortably; if your NVR or UPS chassis runs deeper, the 30-inch family variant avoids the cable-management problems of forcing a deeper device into an undersized enclosure.

Deployment Considerations:

• Verify wall-stud or unistrut backing can handle the combined weight of the enclosure plus all installed equipment before mounting — wall-mount enclosures at full load are frequently heavier than installers expect.
• The AC00 suffix is easy to overlook in procurement; if your site already runs warm, specify a pre-fitted AC variant from the factory rather than retrofitting cooling post-installation.

This enclosure is a solid fit for a single-floor security closet in a light-industrial facility — housing a 16-channel NVR, PoE switch, and patch panel in a protected, lockable wall-mount unit without dedicating floor space to a full rack cabinet.