Vertiv GL24N12-24-B-AC13 NEMA 12 Wall-Mount Enclosure with 1300 BTU AC
Overview
The Vertiv GL24N12-24-B-AC13 is a 12U NEMA 12 wall-mount enclosure configured with an integrated 1300 BTU air conditioner — purpose-built for housing active networking, access control, or edge compute equipment in environments where ambient heat and dust contamination are real operational concerns. The enclosure ships in gray and is designed for locations where a freestanding rack isn't practical: wiring closets, production floors, utility rooms, and equipment alcoves where wall real estate is the only available footprint.
The 24-inch depth accommodates standard 1U/2U rack-mount gear without shelf adapters or modifications. For deeper equipment — larger UPS units, certain video recorders, or deeper PoE switch platforms — the GL24N12-24-B-AC13 is also available in a 30-inch depth variant; verify your deepest unit's spec before ordering.
Key Features
- 1300 BTU Integrated AC: Active cooling handles heat loads that passive fan/filter arrangements cannot — relevant when you're packing PoE switches, NVRs, or edge servers into a sealed NEMA enclosure in a warm utility space. 1300 BTU is adequate for moderate-density 12U builds; move to the 2200 BTU AC variant if your calculated heat load runs higher.
- NEMA 12 Rating: Provides protection against dust, dripping water, and light splashing — appropriate for light industrial, manufacturing-adjacent, or mechanical room installations. Not rated for outdoor or washdown environments.
- 12U Capacity (24-inch height): Fits standard 1U–4U rack-mount equipment. Plan your U-count carefully — the AC unit itself consumes rack space depending on configuration; verify the usable U count with Vertiv documentation before finalizing your equipment list.
- Flexible Airflow Options: The GL24N12-24-B-AC13 (often searched as GL24N12 24 B AC13) sits within a family that also supports passive fan/filter and accepts optional AC or fan/filter as field upgrades — useful if your thermal requirements change post-installation.
- Wall-Mount Form Factor: Eliminates floor footprint entirely, which matters in tight telecom rooms, security head-end closets, or access control head-end rooms where rack space is at a premium.
Frequently Asked Questions
Q: What is the usable rack depth inside the GL24N12-24-B-AC13?
A: The enclosure is available in 24-inch and 30-inch depth configurations. Verify the depth variant on your order and check the usable interior depth against your deepest rack-mount unit — the AC unit and cable management may reduce available depth slightly.
Q: Is the GL24N12-24-B-AC13 suitable for outdoor installation?
A: No. The NEMA 12 rating covers dust and dripping/splashing water in indoor industrial environments. For outdoor installations, a NEMA 3R or NEMA 4X rated enclosure is required.
Q: Can I upgrade the cooling on this enclosure later?
A: The GL24N12-24-B-AC13 family supports optional fan/filter and AC unit configurations, and the enclosure accepts optional upgrades. Confirm upgrade compatibility with Vertiv for your specific configuration before purchase.
Q: How many rack units are actually usable with the AC unit installed?
A: The total enclosure height is 12U (24-inch). The AC unit configuration may consume some rack units depending on internal mounting. Consult Vertiv's configuration documentation to confirm usable U count for your equipment plan.
Q: What environments is the NEMA 12 rating appropriate for?
A: NEMA 12 is rated for indoor use in light industrial, manufacturing, and mechanical environments — protection against dust, lint, and incidental dripping or splashing water. It is not suitable for hose-down areas, outdoor locations, or corrosive atmospheres.
When I spec the GL24N12-24-B-AC13 into a project, the 1300 BTU integrated AC is the deciding variable — it's not a comfort feature, it's the difference between equipment running within thermal spec and thermal throttling or early failure in a sealed NEMA 12 enclosure on a warm production floor or in a sun-loaded mechanical room. That BTU rating is sized for a moderate-density 12U build: think a managed PoE switch, a small NVR, and a couple of access control panels. Push much beyond that load and you need to step up to the 2200 BTU variant in the same family.
Technical Highlights:
- 1300 BTU Active Cooling: Handles real heat loads from active networking and edge compute gear that a passive fan/filter arrangement can't manage in sealed, warm environments — critical for 24/7 operation of security equipment.
- NEMA 12 Enclosure Rating: Protects contents from dust ingress and incidental dripping or splashing — the right spec for mechanical rooms, light manufacturing areas, and equipment alcoves, without the cost premium of NEMA 4X stainless.
- 12U / 24-inch Configuration: Wall-mount form factor with 24-inch depth accommodates standard 1U–4U rack-mount equipment without floor footprint — the right answer for head-end security closets and telecom rooms with no floor space available.
Deployment Considerations:
- Account for the AC unit's internal footprint when planning your U count — the 12U total includes space the cooling system occupies; confirm usable rack units with Vertiv's configuration guide before finalizing your bill of materials.
- NEMA 12 is an indoor-only rating. If the installation site has any exposure to outdoor conditions, water jets, or corrosive vapors, this enclosure is not the correct choice — step to NEMA 3R or NEMA 4X accordingly.
The GL24N12-24-B-AC13 is a straightforward fit for security head-end rooms and access control equipment closets on industrial or commercial campuses where ambient temperatures regularly exceed safe operating ranges for unventilated enclosures — and where a floor-standing rack simply isn't an option.
