West Penn's 24 Gauge Shielded Plenum Cable (1000') is a superior fire-resistant low-capacitance cable with individually shielded pairs for use within ducts, plenums and similar spaces for pro audio, recording studios, post-production facilities and sound systems. UL listed.
ASTM tinned copper
Low-loss foam insulation
Short overall twist lengths
Each pair individually shielded--100% coverage of aluminum polyester foil with standard TC drain wire