Vertiv CMRX-45U36-B-SQM6 45U Open Frame Rack Enclosure
The Vertiv CMRX-45U36-B-SQM6 is a 45U open-frame rack designed for data centers, server rooms, and equipment closets where flexible mounting, clear airflow paths, and solid hardware compatibility matter. Available in multiple height and depth configurations, the CMRX series lets you right-size the enclosure to your actual footprint rather than defaulting to a one-size cabinet. The black finish of this SKU suits standard raised-floor and structured cabling environments without drawing visual attention to the rack itself.
Key Features
- 45U Usable Height: 45U gives you room to mount high-density switching, patch panels, servers, and power distribution in a single vertical run — reducing floor footprint compared to splitting gear across two shorter racks. The CMRX series also ships in 52U and 59U configurations if your stack runs taller.
- 36-Inch Depth: The 36-inch depth of this configuration accommodates deep 1U/2U servers and network appliances without forcing cable-bend compromises at the rear. Shallower depths (10.5, 16.25, 24, and 30 inches) are available within the CMRX family for telecom or AV applications where footprint is the constraint.
- M6 Square-Hole Mounting (3/8-inch): The SQM6 suffix identifies this rack as M6 square-hole — the standard for cage-nut and clip-nut hardware used by most enterprise server and networking vendors. Equipment drops in without thread-chasing or adapter plates, which matters when you're racking dozens of units under a deadline.
- Black Finish: The black powder coat matches standard data center and security rack environments. Winter White is available in the same CMRX family for broadcasting, control room, or facility installations where aesthetics are part of the specification.
- Open-Frame Construction: Without side panels or a full enclosure shell, the CMRX promotes passive airflow from front to rear — useful in well-cooled rooms where hot-aisle/cold-aisle containment handles thermal management at the row level rather than the rack level.
- Multiple Depth Options in One Family: Specifying the CMRX series across a mixed-equipment deployment lets you standardize on one Vertiv rack line while still matching depth to each equipment type — patch-panel bay at 24 inches, compute bay at 36 inches — without sourcing from multiple vendors.
Integration and Compatibility
The M6 square-hole rail pattern (3/8-inch) is compatible with cage nuts and clip nuts standard across enterprise networking and server hardware from most major vendors. If your environment mixes legacy equipment requiring #12-24 tapped rails, that mounting option is also available within the CMRX family — confirm the specific suffix before ordering, as tapped and square-hole variants are not interchangeable in the field. The CMRX-45U36-B-SQM6 (often searched as CMRX 45U36 B SQM6) integrates into existing Vertiv Vertiv rack and enclosure deployments and pairs naturally with power distribution units and structured cabling patch panels. For high-density compute rows, pairing with a rack cooling solution is advisable given the open-frame design's reliance on room-level airflow. Review our rack planning guide for load, spacing, and cable management recommendations before finalizing your layout.
Frequently Asked Questions
Q: What mounting hardware standard does the CMRX-45U36-B-SQM6 use?
A: This model uses M6 square-hole (3/8-inch) rails, compatible with standard M6 cage nuts and clip nuts used by most enterprise server and networking equipment vendors.
Q: Is the CMRX-45U36-B-SQM6 available in other depths?
A: Yes. The CMRX family is offered in 10.5, 16.25, 24, 30, and 36-inch depths. This SKU is the 36-inch depth configuration.
Q: Can I get the CMRX rack in a color other than black?
A: The CMRX series is offered in Black and Winter White. The Winter White variant is a separate SKU — verify the part number suffix when ordering.
Q: Does this rack support tapped-hole mounting instead of square-hole?
A: The CMRX family includes #12-24 tapped rail variants, but the CMRX-45U36-B-SQM6 specifically uses M6 square-hole rails. Tapped and square-hole configurations are not field-convertible — order the correct variant for your equipment.
Q: What other U-heights are available in the CMRX series?
A: The CMRX series is available in 45U, 52U, and 59U heights. Select based on your total rack unit count plus a buffer for future expansion.
When I spec open-frame racks for structured deployments, the rail standard is usually the first question — and the CMRX-45U36-B-SQM6 answers it cleanly with M6 square-hole (3/8-inch) rails. That's the pattern your switches, patch panels, and 1U servers expect. No adapter plates, no thread inserts, no last-minute surprises during a rack-and-stack window.
Technical Highlights:
- 36-Inch Depth: Deep enough for full-length servers and rear cable management arms without forcing a bend-radius violation at the back of the unit.
- 45U Capacity: A full 45U column in a single rack handles a dense but manageable equipment stack — compute, switching, and power distribution without a second cabinet eating floor space.
- Multi-Configuration Family: The CMRX line spans 45U/52U/59U heights and five depth options (10.5 through 36 inches), so you can standardize on one platform across rooms with different equipment mixes.
Deployment Considerations:
- Open-frame means no side-panel containment — this rack depends entirely on room-level airflow management. Verify your hot-aisle/cold-aisle setup handles the heat load before committing to open-frame over a closed cabinet.
- SQM6 (square-hole M6) and tapped (#12-24) CMRX variants are not interchangeable. Confirm your equipment's mounting hardware before ordering — swapping rails in the field is not practical.
The CMRX-45U36-B-SQM6 is a solid fit for server room builds and IDF closets where room cooling is already designed in and the priority is fast, clean rack-and-stack using standard M6 cage-nut hardware.
