CMR Cable | McMaster-Carr

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	Number of Wires Number of Wires

	Shielding Shielding

	Unshielded
	Shielded

	Wire Gauge Wire Gauge

	Outer Insulation Color Outer Insulation Color

	Gray

	Wire Type Wire Type

	Stranded

	Cable AWG Cable AWG

	Inner Insulation Color Inner Insulation Color

	Beige		Black
	Blue		Brown
	Gray		Green
	Orange		Pink
	Purple		Red
	White		Yellow

	Shield Type Shield Type

	Foil

	System of Measurement System of Measurement

Inch

	OD OD

	Voltage Voltage

300V AC

300V DC

	Flexibility Flexibility

	Flexible

	Inner Insulation Marking Inner Insulation Marking

Colored

	Industry Designation Industry Designation	Show

CMR

	Industry Designation Industry Designation	Hide

	Use For Use For

Buildings

Interference Shielding

	Wire Finish Wire Finish

Bare

	Outer Insulation Material Outer Insulation Material

Plastic

	Inner Insulation Material Inner Insulation Material

Plastic

	Wire Material Wire Material

Copper

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Minimum Temperature Minimum Temperature

-49° to 0° F

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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20 Products

About Wire and Cable

Unshielded

Shielded

Use For:
Unshielded: Buildings
Shielded: Buildings, Interference Shielding
Flexible
Temperature Range: 0° to 140° F
Insulation: PVC Plastic

This cable is designated CL3R and CMR, so it has flame-resistant insulation and is approved for use in low-circuit circuits in vertical shafts and large facilities with multiple levels. It’s often used in intercoms, speakers, and security systems.

Use unshielded cable in applications where signal interference is not a concern.

Shielded cable has a layer of foil that blocks signal interference from nearby equipment and devices. It has an uninsulated ground wire is not counted in the number of wires.

Unshielded Stranded Wire
Wire Ga.	No. of Wires	Cable AWG	OD	Outer Insulation Color	Inner Insulation Color	Features	Industry Designation	Specifications Met		10 ft.	25 ft.	50 ft.	100 ft.	250 ft.
300V AC/300V DC
22	6	22/6	0.16"	Gray	Black, Blue, Brown, Green, Red, White	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	000000	000000	000000	000000
22	8	22/8	0.17"	Gray	Black, Blue, Brown, Green, Orange, Red, White, Yellow	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
22	12	22/12	0.23"	Gray	Beige, Black, Blue, Brown, Gray, Green, Orange, Pink, Purple, Red, White, Yellow	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
18	2	18/2	0.18"	Gray	Black, Red	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	00000
18	3	18/3	0.15"	Gray	Black, Red, White	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	00000
18	4	18/4	0.18"	Gray	Black, Green, Red, White	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
18	6	18/6	0.21"	Gray	Black, Blue, Brown, Green, Red, White	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
16	2	16/2	0.16"	Gray	Black, Red	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	000000
16	4	16/4	0.2"	Gray	Black, Green, Red, White	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
14	2	14/2	0.21"	Gray	Black, Red	__	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
Shielded Stranded Wire
300V AC/300V DC
22	2	22/2	0.13"	Gray	Black, Red	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	00000
22	4	22/4	0.15"	Gray	Black, Green, Red, White	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	00000
22	8	22/8	0.21"	Gray	Black, Blue, Brown, Green, Orange, Red, White, Yellow	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	000000
18	2	18/2	0.15"	Gray	Black, Red	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
18	3	18/3	0.19"	Gray	Black, Red, White	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	0000	00000	00000	00000	000000
18	4	18/4	0.2"	Gray	Black, Green, Red, White	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
18	6	18/6	0.23"	Gray	Black, Blue, Brown, Green, Red, White	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
16	2	16/2	0.19"	Gray	Black, Red	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
16	4	16/4	0.22"	Gray	Black, Green, Red, White	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000
14	2	14/2	0.22"	Gray	Black, Red	Uninsulated Ground Wire	CMR, CL3R	ETL Listed, C-ETL Listed	0000000	00000	00000	00000	00000	000000

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Riser-Rated Communication and Security System Cable