Vertiv CMR-45U16-B-SQM6 45U Open-Frame Rack — Black, 16.25 in. Depth, M6 Square-Hole Mounting
Overview
The Vertiv CMR-45U16-B-SQM6 is a 45U open-frame equipment rack built for data centers, server rooms, and network closets where airflow, accessibility, and density matter more than a fully enclosed cabinet. At 16.25 inches of usable depth with M6 square-hole mounting rails, it accommodates standard 19-inch rackmount gear from network switches and patch panels to NVRs and video surveillance appliances — without the overhead of a full enclosure.
This model ships in black and is part of the Vertiv CMR rack family, which offers multiple height and depth configurations. The CMR-45U16-B-SQM6 (sometimes searched as CMR 45U16 B SQM6) targets environments where cable management, front-and-rear technician access, and rapid equipment swaps are a daily operational requirement.
Key Features
- 45U height: 45U of vertical rail space handles a full complement of 1U and 2U devices — enough for a dense access layer switch stack, patch field, and NVR array in a single rack footprint.
- 16.25 in. rail depth: Sized for shallower network gear and surveillance appliances that don't need the full 30–36 in. depth of server racks — keeps the footprint compact in network closets and IDF spaces.
- M6 square-hole (3/8 in.) mounting: Industry-standard M6 tapped rails accept cage nuts and standard rackmount hardware directly, eliminating the need for thread-cutting or adapter plates when mixing equipment vendors.
- Black finish: Blends into equipment rooms and video walls without the visual noise of silver/grey frames — a practical consideration in open-plan NOC or security operations center environments.
- Open-frame design: No side panels means unrestricted airflow from any direction — front-to-back, side-to-side, or top-exhaust — which simplifies thermal management compared to enclosed cabinets without active cooling.
- Multiple configuration options in the CMR family: The broader Vertiv rack and enclosure lineup spans 45U, 52U, and 59U heights at depths from 6 in. to 16.25 in., so you can standardize on the same mounting rail system across different room types.
Integration & Compatibility
The M6 square-hole rail pattern is the de facto standard for open-frame racks in North American data infrastructure. Most 1U and 2U rackmount network switches, PoE switches, patch panels, cable managers, and NVRs ship with M6 cage nut hardware and will mount directly. If you're deploying PoE network switches or rackmount network video recorders alongside structured cabling, confirm your deepest chassis fits within 16.25 in. — some higher-density NVRs and storage appliances exceed that depth and require a deeper rail configuration available elsewhere in the CMR family.
For guidance on sizing rack infrastructure to your surveillance or network deployment, consult a pre-sales engineering review to match rack depth and U-count to your planned equipment list before ordering.
Frequently Asked Questions
Q: What mounting hole standard does the CMR-45U16-B-SQM6 use?
A: The CMR-45U16-B-SQM6 uses 3/8 in. square-hole (M6) mounting rails, which accept standard M6 cage nuts and are compatible with the vast majority of commercial rackmount equipment.
Q: What is the usable depth of this rack?
A: The rail depth on this configuration is 16.25 inches. Verify the chassis depth of your deepest piece of equipment before ordering — some dense NVRs and storage appliances require deeper rails.
Q: Is the CMR-45U16-B-SQM6 an open-frame rack or a fully enclosed cabinet?
A: It is an open-frame rack. There are no side panels, doors, or roof — which maximizes airflow and technician access but provides no physical security enclosure. If lockable panels are required, look at enclosed cabinet variants in the Vertiv lineup.
Q: What other height and depth options are available in the CMR family?
A: The CMR family includes 45U, 52U, and 59U height options and depths ranging from 6 in. to 16.25 in., available in black or winter white finishes. Select the configuration that matches your equipment depth and room clearance requirements.
Q: Can this rack be used for video surveillance NVRs and network switches together?
A: Yes. The 45U height and M6 square-hole rails are compatible with standard 1U/2U rackmount NVRs, PoE switches, and patch panels. Confirm your NVR chassis depth is 16.25 in. or less before specifying this model.
