The 250 ft. roll of 18/5 Brown Thermwire is a specialized electrical wire designed for use in thermal and low-voltage applications. This thermoplastic wire features five insulated conductors, all encased in a flexible brown outer jacket. The 18-gauge wire is suitable for tasks requiring precise control and reliable performance in environments where heat resistance is important. It is ideal for use in applications such as low-voltage control circuits, thermostat wiring, and other temperature-sensitive wiring needs. The wire is UL listed for safety and is intended for use in dry locations. The 250-foot roll provides ample length for extensive installations or multiple projects.