Vertiv GL24WMCMM-B-SH-00-00 24" 12U Fan-Cooled Wall Mount Enclosure
Overview
The Vertiv GL24WMCMM-B-SH-00-00 is a 24-inch-deep, 12U wall-mount enclosure configured with active fan airflow, a solid door, and gray finish — built for IT closets, network termination rooms, and edge deployments where passive ventilation isn't enough and rack space on the floor doesn't exist. This unit ships as part of Vertiv's configurable WM Premium wall-mount line, which spans 12U through 25U and supports multiple door, color, access-control, and cable-management combinations. If you're sourcing this specific configuration, GL24WMCMM-B-SH-00-00 (often searched as GL24WMCMM B SH 00 00) is the exact SKU for the 24-inch-depth, fan, solid-door, gray variant.
Wall-mount enclosures occupy a different planning conversation than floor-standing racks. You're trading depth and U-count for proximity to the work — patch panels, fiber terminations, small switches, and access control panels that belong on the wall of a telecom room or security equipment closet rather than in a centralized data room. The GL24WMCMM-B-SH-00-00 addresses the thermal challenge that kills most wall-mount deployments: heat buildup from densely packed active hardware in an enclosed box on a wall with no natural convection path.
Browse the full Vertiv enclosure and infrastructure catalog or explore the broader network cabinets and racks category to compare configurations side by side.
Key Features
- 24" Depth (12U Height): 12U of usable rack space in a 24-inch-deep footprint — deep enough to seat most 1U access switches, PoE injectors, and patch panels without forced half-depth workarounds. If your hardware runs deeper than 24 inches, step up to the 36" (19U) or 48" (25U) height variants in the same WM Premium family, which offer proportionally more depth clearance.
- Active Fan Airflow: The fan option is the reason to choose this SKU over the non-fan variant. In a sealed wall-mount enclosure with a loaded switch or NVR inside, ambient heat accumulates fast — active airflow pulls heat out before it cycles back into intake. For any installation running 24/7 active hardware (PoE switches, small NVRs, fiber-to-copper converters), the fan variant is not optional; it's the right engineering call.
- Solid Door: The solid door configuration blocks visual access and reduces dust ingress compared to mesh alternatives — correct for public corridors, lobby termination points, and anywhere aesthetics or vandal deterrence matters. If your installation needs front-panel airflow assist or you want LED status visibility without opening the enclosure, the mesh door variant serves that need instead.
- Gray (Winter White available): Gray blends into standard commercial interiors — office hallways, utility rooms, security command spaces. The Winter White option exists for environments where enclosures are surface-mounted in visible public spaces and need to match wall finishes. Both are part of the same WM Premium line, so color is a pure aesthetics decision, not a functional one.
- Multiple Access Control Options: This configuration ships with Swing Handle access control. The WM Premium platform also supports SEAL Combo (keyed) and SEAL Electronic (electronic lock) variants — relevant if your physical security policy requires keyed or electronically logged cabinet access at the edge. Match your access control tier to the sensitivity of the hardware inside: a PoE switch feeding IP cameras warrants a different posture than a fiber splice enclosure.
- Cable Management Flexibility: The GL24WMCMM-B-SH-00-00 includes cable management in this configuration. The WM Premium line supports None, Cable Bar, and Clear cable management options — choose based on how many horizontal cable runs you're managing and whether cable traceability matters during troubleshooting. Clear management keeps cable bundles visible and organized; Cable Bar handles heavier runs.
Integration and Compatibility
The WM Premium wall-mount line is designed to accept standard 19-inch rackmount equipment — switches, patch panels, fiber distribution units, small form-factor NVRs, and UPS units that fall within the 12U count and 24-inch depth envelope. For deployments pairing this enclosure with active PoE switching, review your PoE switch options against the available U-space and depth before committing. Enclosures at this depth comfortably seat 1U and 2U gear rated for shallow or standard mounts; verify depth of any specific device against the 24-inch interior before specifying.
If you're building out a wall-mount security equipment closet — cameras feeding a local NVR, access control panel, and a managed PoE switch — this enclosure pairs cleanly with that architecture. For larger deployments where U-count grows past 12, the 36U or 48U height variants in the same WM Premium family preserve the same door, color, and access-control options, so you can standardize hardware procurement across sites without switching vendors.
Planning a complete edge security stack? Review the NVR selection guide to size your recorder before locking in the enclosure U-count, and check UPS options if runtime continuity is part of the site spec.
Frequently Asked Questions
Q: What is the usable rack space in the GL24WMCMM-B-SH-00-00?
A: The GL24WMCMM-B-SH-00-00 is a 12U enclosure with a 24-inch depth. The WM Premium family also offers 36-inch (19U) and 48-inch (25U) height variants if you need more rack space in the same product line.
Q: Does this enclosure include active cooling, or is it passive?
A: This specific SKU includes fan airflow — it is the active-cooling configuration of the WM Premium 24-inch wall mount. A non-fan variant also exists in the same family for passive-only deployments.
Q: What door type comes on the GL24WMCMM-B-SH-00-00?
A: This configuration ships with a solid door. The WM Premium line also supports Plexi and Mesh door options; if you need front-panel visibility or airflow assist, specify the appropriate door variant when ordering.
Q: What access control is included on this enclosure?
A: The GL24WMCMM-B-SH-00-00 ships with Swing Handle access control. The WM Premium platform supports SEAL Combo (keyed lock) and SEAL Electronic (electronic lock) alternatives if your security policy requires a higher access-control tier.
Q: Is the GL24WMCMM-B-SH-00-00 available in colors other than gray?
A: Yes. The WM Premium line is available in both Black and Winter White finishes. Gray is the standard commercial finish; Winter White is typically specified for surface-mounted enclosures in public-facing spaces where wall-color matching matters.
Q: What types of equipment can be mounted inside this wall-mount enclosure?
A: Standard 19-inch rackmount equipment — including 1U/2U switches, patch panels, fiber distribution units, small NVRs, and shallow-mount UPS units — can be installed within the 12U space and 24-inch depth envelope. Verify the physical depth of any specific device against the 24-inch interior clearance before specifying.
The spec that matters most on the GL24WMCMM-B-SH-00-00 is the fan airflow option — that single configuration choice is what separates a wall-mount enclosure that runs reliably at full load from one that throttles or fails hardware within the first year. I've seen plenty of sites where the integrator defaulted to the non-fan variant to save a line item, then spent field time tracking down switch reboots and NVR instability that were pure thermal events.
Technical Highlights:
- Fan Airflow Configuration: Active fan cooling removes heat from inside a sealed wall-mount box — critical when you have a PoE switch, NVR, or fiber converter running 24/7 in a 12U space with no passive convection path. This is the right call for any always-on hardware load.
- Solid Door: Blocks ambient light interference and dust ingress in corridors and utility spaces. If your site has HVAC dust or is a high-traffic public area, the solid door holds up better than mesh over a multi-year maintenance window.
- Swing Handle Access Control: Adequate for IT closets with controlled badge access, but if the enclosure is in a semi-public space or your physical security audit requires logged entry events, step up to the SEAL Electronic variant — it's in the same WM Premium family and swaps cleanly.
Deployment Considerations:
- Confirm wall-blocking and structural backing before mounting — 12U of loaded rackmount hardware plus the enclosure shell puts real weight on the wall anchor points. Stud or structural blocking is mandatory; drywall anchors alone are not adequate for a loaded enclosure.
- The 24-inch depth is the watch-out dimension. Most 1U managed switches fit, but verify your specific switch model's depth against the interior clearance before finalizing the BOM — some mid-range 1U switches run 17–18 inches and need cable-bend radius on top of that.
This enclosure is the right specification for a multi-site retail or commercial security rollout where you're standardizing on wall-mount edge nodes — one enclosure per location housing a PoE switch, small NVR, and fiber hand-off, all behind a solid door in a staff-only corridor. The fan variant keeps that stack running without babysitting.
