Sigma Wire & Cable | Bulk, Thermostat 18/3 CMR; 18AWG, 3C, Unshielded, 500ft Reel (Brown)

The Sigma Wire Thermostat wire is a high-quality 18 gauge 3 conductor solid copper CMR (communications, multimedia, and riser) wire that is specifically designed for your heating and HVAC needs. The wire's solid copper construction ensures excellent conductivity and durability, while the CMR rating ensures that it is suitable for use in residential and commercial installations.

This thermostat wire is perfect for connecting thermostats to your heating and cooling systems, as well as for use in other HVAC applications. It is UL listed and meets all relevant safety standards, so you can trust that it will provide reliable performance for years to come.

The Sigma Wire Thermostat wire comes in a convenient spool, making it easy to cut and install as needed. It is also coated in a durable and flexible insulation, which helps to protect it from damage and makes it easy to route through walls and ceilings.