Vertiv GL48WMCMP-B-SC-AF-00 25U Wall-Mount Network Enclosure with Active Fan and SEAL Combo Lock
Overview
The Vertiv GL48WMCMP-B-SC-AF-00 is a 25U (48-inch) wall-mount rack enclosure built for network closets, IDF rooms, and distributed equipment deployments where floor space is not available but full rack capacity is still needed. This specific configuration ships in black with a SEAL Combo access-control lock and an integrated active fan module — a combination that addresses the two most common pain points in wall-mount deployments: unauthorized access and heat accumulation in enclosed spaces. If you are searching for this unit without hyphens, GL48WMCMP B SC AF 00 resolves to the same SKU.
The WM Premium line (GL48WMCMP-B-SC-AF-00 often searched as GL48WMCMP-B-SC-AF-00) is a configurable platform, but this variant locks in the decisions most integrators spend the longest time debating: how to control access and how to manage thermals. Both are factory-specified here, which simplifies procurement and eliminates field-retrofit work.
Key Features
- 25U (48-inch) Usable Depth in a Wall-Mount Form Factor: 25U accommodates a meaningful equipment stack — patch panels, managed switches, a small UPS, and still have room to grow — without claiming floor space. In building distribution frames or retail back-of-house closets, this is often the deciding factor between a functional IDF and a cable tangle zip-tied to the wall.
- SEAL Combo Access Control: The SEAL Combo lock provides combination-based physical security without requiring a key management program or electronic credential infrastructure. For deployments where a facility manager needs independent access to network gear — without IT issuing a key — this is a practical middle ground between a basic swing handle and a full electronic lock. It eliminates the most common gap in small-cabinet security: the default unlocked swing handle that ships on lesser enclosures.
- Integrated Active Fan (AF) Airflow: Passive wall-mount cabinets in enclosed telecom rooms routinely run 10–15°C above ambient, which is the single largest contributor to switch and UPS failures in distributed wiring closets. The active fan module in this configuration forces airflow through the enclosure, keeping equipment within rated operating envelopes. No field-sourced fan tray procurement, no compatibility guessing — it ships as a unit.
- Multiple Door Options Available (Plexi / Mesh / Solid): While this SKU is configured at the factory, the WM Premium platform supports plexi, mesh, and solid doors across the product family. Plexi allows visual status-check of indicator lights without opening the enclosure. Mesh maximizes passive airflow when the active fan is not sufficient alone. Solid provides the cleanest appearance in customer-facing or public-area deployments.
- Black Finish: The black enclosure finish blends with standard data center and network room aesthetics and is consistent with most rack infrastructure. Winter White is available in the broader WM Premium family for environments — such as healthcare corridors or retail floors — where a black cabinet would stand out as an eyesore.
- Flexible Height Family (12U / 19U / 25U): The WM Premium platform spans 24-inch (12U), 36-inch (19U), and 48-inch (25U) heights. This GL48WMCMP-B-SC-AF-00 is the 48-inch / 25U variant — the largest in the family — suitable when equipment density rules out the smaller 12U or 19U siblings. If your equipment list fits in 12U, consider the shorter variant to reduce wall loading and improve aesthetics.
- Cable Management Options (None / Cable Bar / Clear): The WM Premium family supports three cable management configurations. Cable bar keeps horizontal runs organized at the rear. The Clear option provides full visibility into cable routing, which reduces troubleshooting time during adds/moves/changes in active environments. No cable management is available for minimal deployments where external management panels are used instead.
- SEAL Electronic Lock Option in Same Family: If your deployment requires audited access — knowing which technician opened the cabinet and when — the WM Premium family also offers SEAL Electronic access control. This GL48WMCMP-B-SC-AF-00 ships with SEAL Combo; upgrade to electronic in the same form factor if your security policy requires an access log.
Integration and Compatibility
The Vertiv wall-mount enclosure line is designed to accept standard 19-inch EIA rack-mount equipment: managed network switches, patch panels, fiber distribution units, small UPS modules, and edge compute appliances. The 25U interior accommodates the full range of 1U–4U gear common in enterprise IDF builds. The active fan module is factory-integrated and does not consume rack units — equipment capacity is not reduced by the thermal management hardware.
Integrators deploying wall-mount cabinets in distributed environments should account for wall-stud or concrete-anchor requirements for a loaded 25U enclosure — verify structural load ratings before installation. Conduit entry points and cable pass-throughs should be confirmed against your site's cabling plan prior to ordering. For projects requiring a full rack planning guide, review our network rack selection guide for sizing and load considerations.
The SEAL Combo lock is field-resettable, which means combination changes do not require vendor involvement — a meaningful operational consideration for multi-tenant buildings or facilities that cycle staff regularly.
Frequently Asked Questions
Q: What is the rack unit capacity of the GL48WMCMP-B-SC-AF-00?
A: This unit is the 25U (48-inch height) configuration of the Vertiv WM Premium wall-mount line. The same platform is also available in 12U (24-inch) and 19U (36-inch) heights if your equipment list does not require the full 25U.
Q: What type of lock does the GL48WMCMP-B-SC-AF-00 ship with?
A: This configuration includes the SEAL Combo access control lock — a combination-based mechanical lock that does not require keys or electronic credentials. The WM Premium family also offers a basic Swing Handle and a SEAL Electronic lock for deployments requiring audited access logs.
Q: Does the GL48WMCMP-B-SC-AF-00 include active cooling, or is it passive only?
A: This SKU includes an integrated active fan module (the AF designation in the part number). Airflow is forced through the enclosure, which is important in enclosed telecom rooms where passive cabinets can run significantly above ambient. The fan is factory-installed and does not consume usable rack units.
Q: What door type comes on the GL48WMCMP-B-SC-AF-00?
A: The WM Premium platform supports Plexi, Mesh, and Solid door options. Confirm the specific door configuration for this SKU with your order documentation, as the platform is configurable across variants. Plexi allows visual LED status checks without opening the cabinet; Mesh maximizes passive ventilation; Solid suits public-facing or aesthetics-sensitive environments.
Q: What cable management options are available for this enclosure?
A: The WM Premium family supports three cable management configurations: None (for environments using external cable management), Cable Bar (for organized horizontal routing), and Clear (for maximum visibility into cable runs). Confirm the cable management configuration included with this specific SKU at time of order.
Q: Can the combination on the SEAL Combo lock be changed in the field?
A: Yes. The SEAL Combo lock is field-resettable, so combination changes do not require returning the unit or engaging vendor support — a practical feature for facilities that rotate personnel or have multi-tenant access requirements.
The GL48WMCMP-B-SC-AF-00 is the configuration I recommend when an integrator needs maximum usable depth in a wall-mount form factor without compromising on physical security or thermals. The 25U capacity is the ceiling of the WM Premium family, and pairing it with the SEAL Combo lock and active fan eliminates two of the most common field complaints I hear about wall-mount deployments: cabinets that run hot and cabinets that anyone with a flathead screwdriver can open.
Technical Highlights:
- 25U Wall-Mount Capacity: The largest height in the WM Premium family at 48 inches — fits a full IDF stack (patch panels, PoE switch, small UPS) without occupying floor space. When you are working in a converted closet or a retail back room, this is often the only practical option.
- SEAL Combo Access Control: Combination-based lock eliminates key management overhead entirely. Field-resettable without vendor involvement — a real advantage in multi-tenant buildings or managed service environments where you cannot control who holds a key.
- Active Fan Airflow: Factory-integrated fan keeps equipment within thermal operating range in enclosed spaces where passive enclosures routinely run 10–15°C above ambient. No rack units consumed by the fan, no field retrofit required.
Deployment Considerations:
- Verify structural wall capacity before mounting a loaded 25U enclosure — concrete anchors or double-stud blocking are typically required. A 25U cabinet fully populated with switches, patch panels, and a UPS can exceed the load ratings of a standard single-stud drywall mount.
- The SEAL Combo lock is a mechanical combination lock, not an electronic one. If your security policy requires an access audit trail — timestamps, user IDs — you need the SEAL Electronic variant in the WM Premium family, not this SKU.
This enclosure is the right call for enterprise IDF closets, school district wiring rooms, and distributed retail network buildouts where a full 25U of wall-mount capacity, SEAL Combo access control, and active thermal management need to ship as a single factory-configured unit — not assembled from separate components in the field.
