Part Number 21330; 16/3C Stranded Bare Copper. Shielded Wire. Nec Article 725 (UL) or ETL Plenum Rated CL2P/CMP. AWG Gauge Gage Size 16/Stranded. Three Conductors. Overall Aluminum/Mylar Shield & Drain Wire. Plenum Rated Cable. (UL) or ETL 300 Volts Power Limited. Applications: Security, HVAC, Speaker, Audio, Access Control, Card Access, CCTV Power and Commercial Applications. All of our Wires & Cables are made in the USA. Available in 1000 & 500 Feet.