Search the catalog

Search the catalog

Home
Building Materials
Lumber & Composites
Plumbing
Electrical
Paint & Supplies
Heating & Cooling
Hardware
Tools
Moulding & Millwork
Flooring
Lighting
Bath

Related products

Building Materials

Gutter Systems
Roofing
Ventilation
Siding
Concrete, Cement & Masonry
Ceilings
Drywall

Lumber & Composites

Fencing & Gates
Decking
Boards & Planks
Plywood
Lattice
Dimensional Lumber
Timber

Plumbing

Plumbing Tools
Plumbing Parts
Pipe & Fittings
Water Pumps
Valves
Plumbing Accessories
Drainage

Shop by Brand

Everbilt
BEHR
Milwaukee
Commercial Electric
Husky
DeWalt
Simpson Strong-Tie

© 2026 Core Ranger, Inc.

Privacy Terms Returns

Home
Electrical
Wire
Low Voltage Wires
Security Cables

Model # 57573044

Southwire 500 ft. 18/4 Gray Stranded CU CL3R Shielded Security Cable

$209$20900

1 in stock

Ideal for fire alarms, security systems and data communications, this Southwire 500 ft. Gray 18/4 CL3R Security Wire is applicable in indoor or outdoor locations. Can be used in either dry or damp environments. It is made with stranded copper conductors.

Suitable for interconnection of electrical devices
Flame-retardant PVC insulation
Maximum-voltage rating of 300-Volt

Specifications

: 18
: Jacketed, Low Voltage
: Non-Grounded
: Not Specified
: 90-Day
: 300v
: Gray
: CL3R
: Pre-Cut Length
: Indoor, Outdoor
: Dry
: Stranded
: Copper
: 4
: NA
: Commercial, Residential
: 500 ft
: UL Listed

Related products

Related products

Southwire 100 ft. 14/2 Solid Romex SIMpull CU NM-B W/G Wire

Southwire 100 ft. 14/2 Solid Romex SIMpull CU NM-B W/G Wire$84^$84⁰⁰

Southwire 1,000 ft. 14/2 Solid Romex SIMpull CU NM-B W/G Wire

Southwire 1,000 ft. 14/2 Solid Romex SIMpull CU NM-B W/G Wire$24–$419^$24⁰⁰–^$419⁰⁰

Southwire 12/2 Solid Romex SIMpull CU NM-B W/G Wire

Southwire 12/2 Solid Romex SIMpull CU NM-B W/G Wire$31–$599^$31⁰⁰–^$599⁰⁰

Southwire 12/2 Black Stranded CU Low-Voltage Landscape Lighting Wire (By-The-Foot)

Southwire 12/2 Black Stranded CU Low-Voltage Landscape Lighting Wire (By-The-Foot)$0.98–$131.74^$0⁹⁸–^$131⁷⁴

Southwire 6/3 Stranded Romex SIMpull CU NM-B W/G Wire

Southwire 6/3 Stranded Romex SIMpull CU NM-B W/G Wire$128–$1,900^$128⁰⁰–^$1,900⁰⁰

Southwire 10/2 Solid Romex Simpull CU NM-B W/G Wire

Southwire 10/2 Solid Romex Simpull CU NM-B W/G Wire$78–$2,111.71^$78⁰⁰–^$2,111⁷¹

Southwire 14/2 Solid CU UF-B W/G Wire

Southwire 14/2 Solid CU UF-B W/G Wire$54–$862.57^$54⁰⁰–^$862⁵⁷

Southwire 1/2 in. 10/3 Ultra-Whip Liquidtight Flexible Non-Metallic PVC Conduit Cable Whip

Southwire 1/2 in. 10/3 Ultra-Whip Liquidtight Flexible Non-Metallic PVC Conduit Cable Whip$31–$34^$31⁰⁰–^$34⁰⁰

Southwire (By-the-Foot) 8-Gauge Solid SD Bare Copper Grounding Wire

Southwire (By-the-Foot) 8-Gauge Solid SD Bare Copper Grounding Wire$1.08^$1⁰⁸

Southwire 6-Gauge Solid SD Bare Copper Grounding Wire

Southwire 6-Gauge Solid SD Bare Copper Grounding Wire$1.63–$374.67^$1⁶³–^$374⁶⁷

Southwire 3/4 in. x 6 ft. 8/2 Ultra-Whip Liquidtight Flexible Non-Metallic PVC Conduit Cable Whip

Southwire 3/4 in. x 6 ft. 8/2 Ultra-Whip Liquidtight Flexible Non-Metallic PVC Conduit Cable Whip$41^$41⁰⁰

Southwire 1,250 ft. 12-Gauge Solid SD Bare Copper Grounding Wire

Southwire 1,250 ft. 12-Gauge Solid SD Bare Copper Grounding Wire$321^$321⁰⁰