Vertiv CMR-45U10-B-SQM6 45U Open-Frame Server Rack
Overview
The Vertiv CMR-45U10-B-SQM6 is a 45U open-frame rack designed for environments where cable access, airflow, and fast equipment swap cycles matter more than enclosed security. With a 10.5-inch depth and M6 square-hole mounting rails, it fits the standard commercial rackmount ecosystem without adapter hardware — patch panels, 1U switches, and shelves drop straight in. If you're building out a mid-size equipment room or collocating network gear alongside physical security infrastructure, this is a practical, space-efficient chassis to anchor the build.
Vertiv's CMR series is worth considering if you're already familiar with their power and cooling product line — the open-frame format pairs naturally with external PDUs and top-of-rack airflow management accessories from the same Vertiv catalog.
Key Features
- 45U Height Capacity: Forty-five rack units give you enough vertical space for a full stack — core switch, patch panels, NVRs, UPS, and spare headroom — without committing to a 52U or 59U footprint that may not fit under a standard drop ceiling. The CMR series also ships in those taller variants if your rack count grows.
- 10.5-Inch Depth: Shallow-depth racks are a practical fit for wiring closets and camera head-end rooms where wall clearance is tight. At 10.5 inches, this chassis won't demand the floor space of a full 24-inch-deep cabinet, though it's not the right choice for deep 2U/4U servers with rear-facing cable bundles.
- M6 Square-Hole Mounting: The 3/8-inch square (M6) rail pattern is the current commercial standard — virtually every enterprise switch, network video recorder, and 1U appliance ships with M6 cage nuts already in the box. No thread-cutting, no adapter plates. Compare this to the #12-24 tapped variant in the same CMR family if you're working with legacy hardware that requires threaded rails.
- Black Finish: The black powder coat finish blends with standard data center and security operations center aesthetics. The CMR series also ships in Winter White for environments — broadcast or architectural installations — where a lighter finish is specified.
- Open-Frame Construction: No side panels or doors means unrestricted cable routing from all four sides and passive airflow that doesn't require planned hot/cold aisle containment. Trade-off: no physical tamper protection. If equipment security is a concern in a public-facing space, a fully enclosed server rack cabinet is the appropriate choice.
- Multiple Depth and Height Options: The CMR line spans 6-inch to 16.25-inch depths and 45U to 59U heights, so the frame you start with can be matched to a deeper variant as the deployment scales — useful when planning camera head-end rooms that tend to grow after initial commissioning.
Integration and Compatibility
The M6 square-hole rail pattern on the CMR-45U10-B-SQM6 is compatible with virtually all standard EIA-310 rackmount equipment. Pair this rack with a PoE switch and a rack-mounted NVR to build a self-contained physical security head-end. If power redundancy is required, Vertiv's own Liebert UPS line mounts directly in the same rail system. For structured cabling deployments, Panduit and similar 1U/2U patch panels install without modification.
When planning cable management for a shallow 10.5-inch rack, factor in that rear-cable horizontal managers may not fully fit — verify cable manager depth before ordering for high-density fiber or copper patch environments. Review the cable management category for compatible options.
Frequently Asked Questions
Q: What mounting hole standard does the CMR-45U10-B-SQM6 use?
A: It uses 3/8-inch square (M6) holes — the current commercial standard. Cage nuts and mounting hardware for standard rackmount equipment install directly without adapters.
Q: Can the CMR-45U10-B-SQM6 support deeper equipment like 4U servers?
A: At 10.5 inches of usable depth, this rack is best suited for shallow 1U-2U networking and security appliances. For deep servers with rear cable bundles, consider the 12-inch or 16.25-inch depth variants in the CMR family.
Q: Is the CMR-45U10-B-SQM6 available in colors other than black?
A: Yes. The CMR series ships in Winter White as an alternate finish for broadcast or architectural environments where the standard black finish is not preferred.
Q: Does the open-frame design of the CMR-45U10-B-SQM6 support airflow management accessories?
A: Open-frame construction allows passive airflow from all sides. It is compatible with top-of-rack airflow accessories, though it does not provide enclosed hot/cold aisle containment. For sealed airflow environments, an enclosed rack cabinet is more appropriate.
Q: What other height options exist in the Vertiv CMR series?
A: The CMR series is available in 45U, 52U, and 59U heights, and in 6-inch, 10.5-inch, 12-inch, and 16.25-inch depths — allowing you to match the specific footprint and capacity needed for the installation.
The CMR-45U10-B-SQM6 is the rack I'd reach for when building a compact physical security head-end in a wiring closet where every inch of floor depth matters. The 10.5-inch depth keeps it off the back wall, the M6 square-hole rails mean you're not spending time sourcing adapters, and 45U gives you room to grow without jumping to a 52U frame that pushes ceiling clearance on a standard 9-foot installation.
Technical Highlights:
- M6 Square-Hole Rails: The 3/8-inch sq. (M6) pattern is the commercial baseline — NVRs, managed switches, UPS units, and patch panels all ship M6-ready. Zero adapter overhead means faster commissioning on multi-rack builds.
- 10.5-Inch Usable Depth: This is the practical minimum for a 1U switch or NVR with front-facing cable connections. Shallow enough for closets with 14–16 inches of total clearance from rack face to wall.
- 45U Capacity in a Compact Footprint: Forty-five units handle a fully loaded head-end — core PoE switch, 48-port patch panel, rack NVR, and Liebert UPS — with 6–8U of spare headroom for future expansion without pulling and replacing the frame.
Deployment Considerations:
- At 10.5 inches deep, rear cable management accessories may not fit standard 2-inch or 4-inch horizontal managers — measure available depth behind equipment rear panels before specifying cable managers for high-density copper or fiber environments.
- Open-frame provides no physical tamper barrier. If the rack is accessible to non-IT personnel or installed in a semi-public space like a back-of-house retail room, pair it with a locking door/side panel kit or consider an enclosed cabinet variant instead.
This is the right frame for a security integrator building a dedicated camera head-end in a server closet — tight on depth, needing standard hardware compatibility, and planning for modest future expansion. It is not the right spec for mixed IT/security rooms running deep hyperconverged nodes or blade chassis.
