Vertiv GL48WMCMM-B-SC-AF-00 25U Wall Mount Enclosure with Fan and SEAL Combo Access
Overview
The Vertiv GL48WMCMM-B-SC-AF-00 is a 48-inch (25U) wall mount enclosure configured with active fan airflow, SEAL combo lock access control, and cable management — the pre-specced configuration for IT closets, comms rooms, and distributed network edge deployments where rack-mounted gear needs protected, ventilated housing without a full floor footprint. Browse the full Vertiv enclosure catalog for the complete wall mount line.
The GL48WMCMM-B-SC-AF-00 ships in a 25U (48-inch height) chassis finished in black. At 25U, this cabinet handles a meaningful density of patch panels, switches, UPS units, and small servers in a single wall-mounted footprint — useful in branch offices, MDF/IDF closets, or camera/access control head-end rooms where floor space is constrained. This SKU is also searched as GL48WMCMM B SC AF 00.
Key Features
- 25U (48-inch) Capacity: The 48-inch height delivers 25U of usable rack space — enough to mount a managed PoE switch, patch panels, a small NVR or NAS, and a UPS in a single wall-hung unit. Floor space stays clear for operations. Explore the broader wall mount cabinet category for alternate depths and heights.
- Active Fan Airflow: The included fan kit moves air through the cabinet rather than relying on passive convection — a critical difference when you're housing actively processing gear like NVRs, PoE switches drawing full budget, or UPS units with charging loads. Prevents thermal throttling in enclosed mechanical rooms or low-ceiling telecom closets.
- SEAL Combo Access Control: The SEAL combo lock provides tool-free access with a user-settable combination — no key management, no locksmith calls when combinations need rotating. Appropriate for shared-access IT environments, branch offices, or low-security-clearance facilities. If electronic audit trail is required for your deployment, the same GL48WM family offers a SEAL Electronic variant.
- Cable Management Included: The cable management option on this configuration (Cable Bar or Clear) keeps patch and power cabling organized at the rear — reduces strain on RJ45 ports and power strips, and makes future adds/moves far less disruptive. Pair with a structured cabling solution for complete pathway management.
- Plexiglass, Mesh, or Solid Door Options: The GL48WM line supports multiple door types including plexiglass (visual status check without opening), mesh (passive airflow), and solid (physical security). This SKU's exact door configuration should be confirmed at order — consult the pre-sales team for the precise door type on this part number.
- Black Finish: The black powder-coat finish blends into most IT closet and comms room environments — aesthetically neutral in customer-facing server rooms or education deployments where visible infrastructure matters.
Integration and Compatibility
The GL48WMCMM-B-SC-AF-00 is a passive enclosure — it houses active gear rather than integrating with it logically. It is compatible with standard 19-inch EIA rack-mount equipment up to 25U. The fan airflow configuration makes it suitable for PoE switches, NVRs, and other heat-generating devices. The SEAL combo lock does not require wiring or power. Wall-mount load ratings should be verified against your wall substrate and local building codes before installation — concrete block and steel stud installations have different anchoring requirements.
Frequently Asked Questions
Q: What is the rack unit capacity of the GL48WMCMM-B-SC-AF-00?
A: The GL48WMCMM-B-SC-AF-00 is the 48-inch height variant, which provides 25U of usable rack space. The GL48WM family also comes in 24-inch (12U) and 36-inch (19U) configurations.
Q: Does the GL48WMCMM-B-SC-AF-00 include a fan?
A: Yes. The AF suffix in the part number designates the active fan airflow configuration. This is the correct choice for deployments housing heat-generating equipment such as PoE switches, NVRs, or UPS units in enclosed wall mount spaces.
Q: What type of lock does the GL48WMCMM-B-SC-AF-00 use?
A: This configuration uses a SEAL Combo lock — a user-settable combination lock requiring no keys or external power. The GL48WM family also offers Swing Handle and SEAL Electronic variants if audit-trail access control is needed.
Q: Is cable management included with the GL48WMCMM-B-SC-AF-00?
A: Yes, the CMM designation in the part number indicates the cable management option is included. The specific style (Cable Bar or Clear) is part of the pre-configured SKU — confirm the exact type with pre-sales if the specific cable management form is critical to your design.
Q: What finish does the GL48WMCMM-B-SC-AF-00 come in?
A: This SKU ships in black. The GL48WM family is also available in Winter White for deployments where aesthetics matter, such as customer-facing spaces or healthcare environments.
The GL48WMCMM-B-SC-AF-00 is a purpose-configured 25U wall mount that addresses the three things that kill IDF closet deployments: heat buildup, cable chaos, and access control. The active fan airflow option is the right call any time you're mounting gear that runs a continuous load — a fully loaded 24-port PoE switch or a small NVR will thermally stress a passive enclosure within months in a tight utility closet.
Technical Highlights:
- 25U at 48 inches: That's meaningful density on a wall — enough for a switch stack, patch panel array, and a 1U UPS without compromise. The 12U and 19U variants in the same family are useful for lighter loads, but the 25U configuration is the one I'd spec for a full IDF build-out.
- SEAL Combo Lock: No key management overhead. For multi-tenant buildings or branch offices with rotating IT staff, a user-settable combination is operationally simpler than a key system — and the SEAL Electronic variant is there when you need an audit trail without respeccing the whole cabinet.
- Cable Management (CMM): Built-in cable management is the difference between a closet you can work in six months from now and one that requires a full re-punch to add a single run. Don't skip it — the CMM designation on this SKU means it ships ready to manage both patch and power cabling from day one.
Deployment Considerations:
- Wall substrate matters more than the cabinet spec. Confirm your anchor points support the loaded weight of a 25U cabinet before finalizing the installation plan — concrete block is straightforward, but steel stud installations require blocking or through-bolting.
- The exact door type (Plexiglass, Mesh, or Solid) for this specific part number should be confirmed before ordering if door style is a design requirement — the GL48WM family supports all three, and the suffix encoding doesn't make the door type unambiguous from the MPN alone.
The GL48WMCMM-B-SC-AF-00 is the enclosure I'd reach for in a distributed enterprise IDF or branch office comms room build where active gear density, cable discipline, and simple access control need to come pre-integrated in a single ordered SKU.
