Sound and Security Wire, Shielded, Plenum, Stranded, Conductor Size 16 AWG, Number of Conductors 2, Nominal Outside Dia 0.179 In, Spool/Coil Length 1000 Ft, Voltage 300, Color Gray, Stranding 19/.0117, Insulation Premium Grade S-R PVC, Vertical Tray Flame Test California State Fire Marshall Approved, Temp Range -4 to 167 F, Shielding Flexfoil Shield, Jacket Material PVC, Application Security, Intercom and Audio, NEC Article 725 Type CL3R, 800 Type CMR, RoHS Compliant Directive 2002/95/EC Security and Alarm CableSound, Alarm, and Security Cable, Types CMR and CMPFor burglar alarms, intercoms, PA systems, and sound systems. Stranded or solid bare copper conductor per ASTM B-3, B-8, and B-286. Jacket has sequential footage markings to facilitate installation. UL Listed and California State Fire Marshall Approved. Shielded cable has an aluminum/polyester Flexfoil shield with stranded, tinned-copper drain wire.PlenumCompliance: NEC Article 800 Type CMP and Article 725 Type CL3P Meet UL 910 Flame Test Temp. range: 32 to 167 F Rated for 300V