Hammond CMR3BK1 1U 3-Inch Steel Cable Management Ring
Ships from and sold by A5 IT
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Create Free Business AccountKey Features
- 1U ring, 3.00 in (76 mm) wide x 3.50 in (89 mm) deep, for horizontal or vertical cable routing in racks
- Holds 53 Cat 6 cables at recommended 50% fill and up to 107 Cat 6 at 100% fill
- 14-gauge mild steel construction for durable cable routing and support
- Textured black painted powder coat finish; GREENGUARD, TSCA and RoHS compliant
- Three 0.25 x 0.38 in mounting slots; designed for standard EIA-310 rack rails
- Mountable between two DNRRHDW racks to create a shared vertical cable pathway
- Open design allows fast cable moves, adds and changes without removing the ring
- TAA-compliant and manufactured in North America; USMCA, RoHS and REACH compliant
The CMR3BK1 is a 1U cable management ring, 3.00 in (76 mm) wide and 3.50 in (89 mm) deep, designed to route, support and organize cable bundles in rack systems. It suits IT, AV, network and telecom installers who need modular cable pathways that can be placed exactly where the cables run, rather than a fixed panel-based manager.
Construction is 14-gauge mild steel with a textured black painted powder coat finish that is GREENGUARD, TSCA and RoHS compliant, supporting indoor air quality and environmental compliance requirements. The ring has three mounting slots (0.25 x 0.38 in) and is designed to mount to standard EIA-310 rack rails. Mounting hardware is not included.
Cable capacity is rated at both a recommended 50% fill ratio and a maximum 100% fill ratio: 84 Cat 5e, 53 Cat 6 or 37 Cat 6a cables at 50% fill, and 167 Cat 5e, 107 Cat 6 or 74 Cat 6a cables at 100% fill. Overall height is 1.75 in (44 mm), equal to one rack unit, and shipping weight is 1 lb (0.45 kg).
Because the open ring design allows cables to be added or removed without disassembly, CMR3BK1 can be installed individually or in multiples to build custom horizontal and vertical routing paths, reduce cable strain and prevent sagging or tangling. It can also be mounted between two DNRRHDW racks to form a shared vertical cable pathway, improving organization and increasing capacity in multi-rack deployments.
The part is TAA-compliant and manufactured in North America (country of origin: Canada), and is USMCA, RoHS and REACH compliant for government and regulated procurement.
Ideal For
- Data centers and IT rooms
- Routing patch cables between switches and patch panels
- Network, telecom and structured cabling deployments
- AV and broadcast rack environments
- Custom rack builds needing flexible cable routing
Overview
| Part Number | CMR3BK1 |
| Nominal Size | 1U, 3 in wide |
| Product Type | Rack Cable Management Ring (CMR Series) |
| Short Description | 1U 3IN WIDE CABLE RING |
Dimensions
| Overall Depth | 3.50 in (89 mm) |
| Overall Width | 3.00 in (76 mm) |
| Overall Height | 1.75 in (44 mm) |
Identifiers
| UPC | 623980387017 |
| UNSPSC | 43223305 |
| GTIN-14 | 00623980387017 |
| UPC W/o Check Digit | 62398038701 |
Rack Mounting
| Rack Units | 1U |
| Rail Standard | Designed to mount to standard EIA-310 rack rails |
| Multi-Rack Use | Can be mounted between two DNRRHDW racks to form a shared vertical cable pathway |
| Mounting Hardware | Not included |
Cable Capacity
| Maximum Fill (100%) - Cat 6 | 107 |
| Maximum Fill (100%) - Cat 5e | 167 |
| Maximum Fill (100%) - Cat 6a | 74 |
| Recommended Fill (50%) - Cat 6 | 53 |
| Recommended Fill (50%) - Cat 5e | 84 |
| Recommended Fill (50%) - Cat 6a | 37 |
Packaging & Shipping
| Tariff Code | 7326.90.8688 |
| Shipping Weight | 1 lbs (0.45 kg) |
| Country Of Origin | CA (manufactured in North America) |
Construction & Finish
| Gauge | 14-gauge steel |
| Finish | Painted black, textured (black powder coat) |
| Material | Mild Steel |
| Finish Compliance | GREENGUARD, TSCA, RoHS compliant |
Compliance & Certifications
| ECCN | EAR99 |
| Standards | TAA-compliant |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| USMCA Compliant | Yes |
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Frequently Asked Questions
How many cables does the CMR3BK1 hold?▾
At the recommended 50% fill ratio it supports 84 Cat 5e, 53 Cat 6 or 37 Cat 6a cables. At 100% maximum fill it supports 167 Cat 5e, 107 Cat 6 or 74 Cat 6a cables.
How much rack space does it take up?▾
It is a 1U accessory, 1.75 in (44 mm) high, 3.00 in (76 mm) wide and 3.50 in (89 mm) deep.
Is mounting hardware included?▾
No. The drawing notes that mounting hardware is not included; the ring has three 0.25 x 0.38 in mounting slots and is designed to mount to standard EIA-310 rack rails.
What is the CMR3BK1 made of and what is the finish?▾
It is 14-gauge mild steel with a textured black painted powder coat finish that is GREENGUARD, TSCA and RoHS compliant.
Is this part suitable for government procurement?▾
Yes. CMR3BK1 is TAA-compliant and manufactured in North America, with country of origin Canada, and it is USMCA, RoHS and REACH compliant.
Can it be used for vertical cable routing between racks?▾
Yes. The ring supports both horizontal and vertical routing, and CMR3BK1 can be mounted between two DNRRHDW racks to create a shared vertical cable pathway in multi-rack deployments.
