Vertiv GL48N12-30-B-AFFF 26U NEMA 12 Wall-Mount Rack Enclosure
The Vertiv GL48N12-30-B-AFFF is a 48-inch-tall, 26U NEMA 12-rated wall-mount enclosure designed for industrial and commercial equipment installations where floor space is constrained and environmental protection from dust and non-directed water is required. At 30 inches deep, it accommodates standard rackmount hardware without forcing compromises on cable management or airflow accessories. If you are sourcing a Vertiv rack enclosure for a mid-density deployment, this model covers the most common 26U application range.
Key Features
- 26U / 48" Height: The GL48N12-30-B-AFFF ships in a 48-inch (26U) configuration — enough capacity for a typical edge or intermediate distribution frame (IDF) load without the footprint of a full floor-standing cabinet. For lighter loads, the same enclosure family is also available at 24" (12U) and 36" (19U), so you can right-size per closet.
- 30" Depth: A 30-inch interior accommodates full-depth 1U/2U switches, patch panels, and similarly sized rackmount appliances. Shallower 24-inch depth variants exist in the product line for locations where wall projection clearance is tighter — worth confirming before ordering if your wall-to-obstacle distance is under 30 inches plus door swing.
- NEMA 12 Rating: NEMA 12 provides protection against dust, dirt, and dripping or splashing non-corrosive liquids — appropriate for light industrial environments, manufacturing floors, utility corridors, and mechanical rooms. It is not rated for outdoor use or wash-down environments; those applications require NEMA 4 or 4X.
- Flexible Airflow and Cooling Options: The enclosure supports a range of thermal management configurations. Passive fan/filter units handle low-heat loads without adding electrical complexity. If the equipment inside generates significant heat, factory-integrated air conditioning units are available at 1000 BTU, 1300 BTU, or 2200 BTU — giving you a path to active cooling without field-fabricating a solution. The 2200 BTU option is relevant for denser switch or server loads in unconditioned spaces. Optional fan/filter kits are also selectable if active AC is not needed at time of purchase but may be required later.
- Wall-Mount Design: Mounting directly to a wall eliminates the floor-standing footprint entirely — a real advantage in telecom rooms, security head-end closets, and IDF spaces where every square foot is accounted for. Confirm structural wall capacity for the loaded weight before installation; masonry or steel stud reinforcement is typically required for a 26U enclosure at full load.
Integration and Compatibility
The GL48N12-30-B-AFFF is designed around standard 19-inch EIA rack rail spacing, accepting conventional rackmount equipment from any vendor. The available cooling options — up to 2200 BTU integrated AC — are factory-fitted configurations rather than field retrofits, so specify the required thermal option at time of order. For installations pairing this enclosure with active network or NVR hardware, confirm the total thermal load of all installed equipment against the selected BTU rating before finalizing the cooling configuration. This enclosure fits naturally into wall-mount enclosure deployments where NEMA 12 ingress protection is the design baseline. For guidance on sizing rack space and cooling for security head-end installations, review the security camera system buying guide for IDF-level planning considerations. For heavier multi-rack deployments, evaluate floor-standing Vertiv cabinet options in the same product family.
Frequently Asked Questions
Q: What rack unit capacity does the GL48N12-30-B-AFFF provide?
A: The GL48N12-30-B-AFFF is a 26U enclosure with a 48-inch overall height. The same product family also includes 12U (24") and 19U (36") variants if a smaller footprint is needed.
Q: What depth is the GL48N12-30-B-AFFF?
A: The GL48N12-30-B-AFFF has a 30-inch interior depth, which accommodates full-depth rackmount equipment. A 24-inch depth variant is also available in the product family for installations with tighter wall-projection clearance.
Q: What does NEMA 12 rating mean for this enclosure?
A: NEMA 12 protects against dust, dirt, and non-directed dripping or splashing liquids — suitable for light industrial and commercial indoor environments such as manufacturing floors, utility corridors, and mechanical rooms. It is not rated for outdoor use or high-pressure wash-down applications.
Q: What cooling options are available for the GL48N12-30-B-AFFF?
A: The enclosure supports passive fan/filter units for low-heat loads, as well as factory-integrated air conditioning at 1000 BTU, 1300 BTU, or 2200 BTU. Optional fan/filter kits are also available if active cooling is not required at time of purchase.
Q: Is the GL48N12-30-B-AFFF suitable for outdoor installation?
A: No. The GL48N12-30-B-AFFF carries a NEMA 12 rating, which is an indoor industrial rating. Outdoor installations require a NEMA 4 or NEMA 4X-rated enclosure.
