Vertiv Cmrx 45U 24 in 24 in Black - CMRX-45U24-B-SQM6

Vertiv CMRX-45U24-B-SQM6 45U Open Frame Server Rack

The Vertiv CMRX-45U24-B-SQM6 is a 45U open-frame rack enclosure in a 24-inch depth configuration, finished in black, with 3/8" square-hole (M6) mounting rails — the hardware combination that covers the majority of standard rack-mount deployments without any rail adapter hassles. If you're populating a server room, network closet, or equipment room with standard 19" EIA equipment, the M6 square-hole rail pattern is the universal fit for rail kits from virtually every major server and storage vendor.

Overview

The CMRX series from Vertiv's Vertiv rack infrastructure line is engineered as a no-compromise open frame rack for data center and enterprise rack enclosures. The CMRX-45U24-B-SQM6 variant locks in the most common field configuration: 45U of usable space, 24" front-to-back depth, and M6 square-hole rail mounting. Open-frame construction means unrestricted airflow on all sides — relevant when you're packing high-density compute or network gear that generates serious heat loads. No side panels means cable management stays fully accessible after installation, and you're not pulling rails and panels apart every time you need to re-cable.

Key Features

• 45U Capacity: 45U accommodates a full stack of 1U servers, patch panels, and PDUs in a single footprint — enough vertical space for most mid-to-large equipment rooms without going to a 52U or 59U frame and the ceiling clearance that requires.
• 24" Depth: The 24-inch depth is the practical sweet spot for network and telecom gear — deeper than shallow-depth wall racks but short enough to fit in constrained network closets where a 36" or 42" frame won't clear the room. Pairs naturally with network switches and patch panels that don't require the full 30"+ depth of a dense server chassis.
• M6 Square-Hole (3/8") Mounting Rails: The 3/8" square-hole M6 pattern is the de facto standard for commercial server rail kits. HPE, Dell, Lenovo, Cisco, and most enterprise networking vendors ship rail kits that clip directly into M6 square-hole racks — no tapping required, no cage nuts needed for most modern gear. If you're also deploying legacy gear that requires #12-24 tapped rails, the CMRX family supports that pattern in other configurations, but this SKU ships with M6 square hole.
• Black Finish: The black powder-coat finish integrates cleanly into most equipment room and data center aesthetics. If your environment standardizes on Winter White (common in some healthcare and clean-room deployments), that variant exists in the same CMRX family.
• Open-Frame Construction: No doors, no side panels — airflow is unrestricted and cable routing is accessible from every angle. For high-density switching or compute rows in a cooled data center, open-frame reduces hot-spot risk compared to enclosed cabinets with inadequate front-to-back airflow design.
• CMRX Family Scalability: The CMRX line spans 45U, 52U, and 59U heights and depths from 10.5" through 36" — meaning you can standardize on a single rack product family across different room types without switching vendors or rail systems. The CMRX-45U24-B-SQM6 (often searched as CMRX 45U24 B SQM6) is the 24" depth entry point in the 45U height tier.

Integration and Compatibility

The M6 square-hole rail pattern on the CMRX-45U24-B-SQM6 is compatible with the rail kits shipped with most commercial-grade rack-mount network switches, servers, storage arrays, and UPS units that follow EIA-310 19" rack standards. The 24" depth accommodates shallow and mid-depth rack equipment; verify chassis depth for servers with cable management arms, which typically add 6–10" to stated chassis depth. Open-frame racks require a separate overhead cable management solution or vertical cable managers — plan for those in your rack BOM if cable organization is a requirement.

Frequently Asked Questions

Q: What is the usable rack space on the CMRX-45U24-B-SQM6?

A: The CMRX-45U24-B-SQM6 provides 45U of usable rack space — sufficient for a full complement of 1U and 2U servers, networking gear, and patch infrastructure in a single frame.

Q: What mounting rail pattern does the CMRX-45U24-B-SQM6 use?

A: This SKU is configured with 3/8" square-hole M6 mounting rails. This is the standard pattern for most modern enterprise server and networking rail kits from HPE, Dell, Lenovo, Cisco, and comparable vendors.

Q: Does the CMRX-45U24-B-SQM6 come in other depths or heights?

A: Yes. The CMRX family is available in 45U, 52U, and 59U heights, and depths ranging from 10.5" to 36". The CMRX-45U24-B-SQM6 is the 24" depth, 45U, black variant. Other SKUs in the family cover the full depth and height range.

Q: Is this an enclosed cabinet or an open-frame rack?

A: The CMRX-45U24-B-SQM6 is an open-frame rack — no side panels, no doors. This maximizes airflow and cable accessibility, making it well-suited for data centers and equipment rooms with active cooling. It is not appropriate for environments where physical security of equipment or dust exclusion is a priority without adding optional enclosure accessories.

Q: Can the CMRX-45U24-B-SQM6 be used with legacy #12-24 tapped rail gear?

A: This specific SKU ships with M6 square-hole rails. The CMRX family does offer #12-24 tapped configurations for legacy equipment, but the CMRX-45U24-B-SQM6 is the M6 square-hole variant. Verify your equipment's rail kit requirements before ordering.

Ted Perry

The CMRX-45U24-B-SQM6 is the version of the CMRX open-frame line I'd spec first for a network-closet or secondary IDF deployment: the 24" depth keeps it manageable in tighter rooms, and the M6 square-hole rail pattern means you're not sourcing specialty cage nuts or threading #12-24 hardware when racking modern switching or compute gear. At 45U you're not space-constrained for typical IDF buildouts.

Technical Highlights:

• 24" Depth: Fits in spaces where a 30"+ rack won't — network closets, IDF rooms, and colocation cages with constrained floor footprints. Just account for cable management arm overhang if you're deploying rack-mount servers with CMAs.
• M6 Square-Hole Rails: Direct compatibility with tool-less and sliding rail kits from virtually every current-generation server and switch vendor. No cage nut installation, no re-threading — install speed matters when you're populating a full 45U frame.
• Open-Frame Design: In a properly cooled equipment room, open-frame outperforms enclosed cabinets for thermal management. No door-induced hot spots, no front-to-back airflow restriction, and cable access from any angle during commissioning or maintenance.

Deployment Considerations:

• Open-frame racks are not appropriate for unsecured or public-access areas — if physical equipment security is a concern, you'll need an enclosed cabinet with locking doors, not this configuration.
• The 24" depth is tight for rack-mount servers with cable management arms attached — verify total chassis + CMA depth against the 24" usable rail depth before committing to this SKU over a 30" or 36" variant in the CMRX family.

The CMRX-45U24-B-SQM6 is a strong fit for secured IDF closets, network equipment rooms, and colocation environments where active cooling is present, floor space is constrained, and the equipment roster is predominantly networking gear or shallow-depth compute rather than full-depth server chassis.