Rack Cable Management Ring · CMR Series

Brand: Hammond Manufacturing · 2 part numbers

Cable management ring designed for flexible cable routing, support, and organization in rack systems.

■14-gauge steel construction provides durable cable routing and support for IT, AV, and network installations.
■Ring design allows cables to be easily routed, added, or removed while maintaining organized pathways.
■Provides flexible cable support for both horizontal and vertical routing within rack systems.
■CMR3BK1 can be mounted between two DNRRHDW racks to form a shared vertical cable pathway, improving cable organization and increasing capacity in multi-rack deployments.
■Helps reduce cable strain and prevents sagging or tangling of cable bundles.
■Designed to mount to standard EIA-310 rack rails for easy installation.

from $9.74

2 of 2 part numbers priced · in stock · ships by ground · volume pricing on request

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Specification sheet (PDF) (224) 955-1644

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Find your CMR Series part number

Filter 2 part numbers by the specifications Hammond publishes for each one, pick the part, and buy it now. Every value comes straight from the manufacturer's part data.

2 of 2 part numbers · 2 priced online

CMR3BK1

1U 3IN Wide Cable Ring

$12.33In stock

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CMRBK1

1U 1.25IN Wide Cable Ring

$9.74In stock

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Dimension tables (inches / mm)

Units shown: inch . Switch units to: mm

Part No.	Overall Dimensions · Height	Overall Dimensions · Width	Overall Dimensions · Depth	Rack · Units	Recommended Cable Fill (50% Fill Ratio) · Cat 5e	Recommended Cable Fill (50% Fill Ratio) · Cat 6	Recommended Cable Fill (50% Fill Ratio) · Cat 6a	Maximum Cable Fill (100% Fill Ratio) · Cat 5e	Maximum Cable Fill (100% Fill Ratio) · Cat 6	Maximum Cable Fill (100% Fill Ratio) · Cat 6a	Price	Order
CMRBK1	1.75	1.25	3.50	1U	34	22	15	68	44	30	$9.74In stock	Buy now
CMR3BK1	1.75	3.00	3.50	1U	84	53	37	167	107	74	$12.33In stock	Buy now

Key Features and Benefits

The CMR Series cable management rings provide a simple and flexible solution for routing and supporting cables in rack systems. Designed as individual cable loops, they allow installers to create custom cable paths that adapt to the needs of each installation.

Unlike panel-based cable managers, the CMR Series offers modular cable routing. Rings can be placed exactly where needed to support cable bundles, improve organization, and reduce strain on connections, making them ideal for structured cabling and network environments.

■14-gauge steel construction provides durable cable routing and support for IT, AV, and network installations.
■Ring design allows cables to be easily routed, added, or removed while maintaining organized pathways.
■Provides flexible cable support for both horizontal and vertical routing within rack systems.
■CMR3BK1 can be mounted between two DNRRHDW racks to form a shared vertical cable pathway, improving cable organization and increasing capacity in multi-rack deployments.
■Helps reduce cable strain and prevents sagging or tangling of cable bundles.
■Designed to mount to standard EIA-310 rack rails for easy installation.
■Available in multiple sizes to support varying cable bundle capacities.
■Open design supports fast installation and easy cable moves, adds, and changes.
■Can be installed individually or in multiples to create custom cable routing paths.
■TAA-compliant, manufactured in North America supports government procurement requirements and ensures consistent quality.
■Black powder coat finish (GREENGUARD, TSCA, RoHS compliant) supports indoor air quality and environmental compliance.