Vertiv CMRX-45U36-W-SQM6 45U Open Frame Server Rack — Winter White, 36-Inch Deep, M6 Square-Hole Mounting
Overview
The Vertiv CMRX-45U36-W-SQM6 is a 45U open frame rack finished in Winter White, configured with 36-inch depth and 3/8-inch square-hole (M6) mounting rails. Open frame racks in this class are the standard choice for network operations centers, server rooms, and AV/security head-end closets where airflow is a priority and physical security of the enclosure itself is not the primary concern. At 45U, you get enough vertical real estate to consolidate a full network switch stack, patch panels, and video management servers in a single column without stacking cabinets. The CMRX-45U36-W-SQM6 (often searched as CMRX 45U36 W SQM6) is part of Vertiv's data center infrastructure line, which covers open frame racks, enclosed cabinets, and power distribution across a broad range of form factors.
Key Features
- 45U Height: 45 rack units gives you approximately 78.75 inches of usable mounting space — enough for a dense head-end deployment combining NVRs, PoE switches, patch panels, and KVM equipment without running out of room mid-project. Fewer racks to cable between means cleaner runs and lower total install labor.
- 36-Inch Depth: The 36-inch depth rail spacing accommodates virtually all standard 1U and 2U server and network appliances, including deep rack-mount NVR appliances that shallow racks can't properly support. Deep rails mean the rear of the equipment is properly supported rather than cantilevering off the front posts.
- M6 Square-Hole (3/8-inch) Mounting: Square-hole M6 rails are the modern standard for rack mounting — cage nuts drop in cleanly, alignment is repeatable, and virtually every enterprise switching, server, and AV product ships with M6-compatible hardware. This eliminates the adapters and thread-chasing that come with legacy #12-24 tapped rail configurations.
- Winter White Finish: The Winter White color option is a practical choice for installations in finished environments — broadcast facilities, command centers, open-plan NOCs, or any space where a black rack reads as industrial equipment rather than infrastructure. Color consistency also simplifies identification in multi-rack rows.
- Open Frame Design: Without side panels or doors, open frame racks provide unrestricted airflow around all installed equipment — a meaningful factor in high-density switch and compute deployments where enclosed cabinets can create hot spots without active cooling. Access from any side also accelerates installs and post-commissioning cable changes.
- Multiple Configuration Options: The CMRX series is available in 45U, 52U, and 59U heights and in depths from 10.5 inches to 36 inches, with both M6 square-hole and #12-24 tapped rail variants. That means you can standardize on the same rack family across different room layouts and equipment depths without switching vendors or fastener systems mid-project.
Integration and Compatibility
The M6 square-hole rail pattern on the CMRX-45U36-W-SQM6 is compatible with standard M6 cage nuts and cage nut installation tools, making it drop-in compatible with rack-mount equipment from virtually every major manufacturer. The 36-inch depth accommodates both shallow network switches (typically 12–17 inches deep) and full-depth servers and NVR appliances. For security integrators building out a head-end room, this rack pairs well with managed PoE switches and rack-mount UPS units from the same Vertiv portfolio. If you are deploying in a raised-floor data center environment, verify floor tile cutout clearance against the rack footprint before ordering — open frame racks require separate vertical cable managers if you need structured cable routing between units in a row. Consider rack accessories such as horizontal cable managers, PDUs, and blanking panels to complete the build.
Frequently Asked Questions
Q: What mounting rail standard does the CMRX-45U36-W-SQM6 use?
A: The CMRX-45U36-W-SQM6 uses 3/8-inch square-hole (M6) mounting rails, compatible with standard M6 cage nuts and rack-mount equipment from all major enterprise vendors.
Q: What is the depth of this rack, and will it fit deep server or NVR appliances?
A: This configuration is 36 inches deep, which is sufficient for virtually all standard 1U and 2U rack-mount servers, NVRs, and networking appliances. Verify the equipment manufacturer's specified rack depth requirement before installing unusually deep or short appliances.
Q: Is the CMRX-45U36-W-SQM6 available in black or other finishes?
A: Yes. The CMRX series is available in both Black and Winter White finishes. This specific model (CMRX-45U36-W-SQM6) ships in Winter White.
Q: Can this rack accommodate different heights or depths if my needs change?
A: The CMRX product family is available in 45U, 52U, and 59U heights and in multiple depth configurations from 10.5 inches to 36 inches. If your requirements differ from this model, select the appropriate height and depth variant within the CMRX series rather than modifying this unit.
Q: Does the open frame design affect cooling or airflow for installed equipment?
A: Open frame racks provide unrestricted airflow on all sides, which is an advantage in high-density deployments. However, because there are no doors or side panels, open frame racks do not provide physical security for installed equipment and are best suited for secured server rooms, NOCs, or locked head-end closets.
Q: Is the CMRX-45U36-W-SQM6 compatible with standard rack PDUs and cable managers?
A: Yes. The M6 square-hole rails accept standard vertical and horizontal cable management accessories and rack PDUs designed for M6 mounting. Blanking panels, cable managers, and shelf accessories rated for M6 rails are compatible.
When I spec a head-end rack for a security or network deployment, the rail standard is the first thing I look at — and the CMRX-45U36-W-SQM6 gets that right with M6 square-hole rails. Cage nut installs are faster and more repeatable than chasing #12-24 threads, and every enterprise switch, NVR, and UPS I've put in a rack in the last decade ships with M6 hardware as the default. The 36-inch depth is the other decision point: it means you're not improvising rear support for a deep appliance or ordering shelf extensions after the fact.
Technical Highlights:
- M6 Square-Hole Rails: 3/8-inch square-hole pattern accepts standard cage nuts — faster installs, no thread damage risk, and compatible with virtually all commercial rack-mount equipment without adapters.
- 36-Inch Rail Depth: Accommodates full-depth servers and NVR appliances that 24-inch or 30-inch depth racks can't properly support without rear-support workarounds.
- 45U Capacity: 45 rack units in a single column — enough vertical space to consolidate switching, patching, video management, and power distribution for a mid-size security head-end without splitting across two racks.
Deployment Considerations:
- Open frame means no physical equipment security — this rack belongs in a locked IDF closet, secured NOC, or dedicated head-end room, not in a shared or public space.
- If you're building a multi-rack row, plan for vertical cable managers between columns before the equipment goes in — retrofitting cable management in a populated open frame row is a labor-intensive job.
The CMRX-45U36-W-SQM6 is the right call for a security integrator building out a dedicated head-end room where a 45U column consolidates NVRs, PoE switches, and patch infrastructure — and where the Winter White finish matters for a client-facing or finished-space installation.
