Windy City 002329 18/2C Shielded Twist Pair Plenum Control Cable CMP Blue /100ft
It has x2 18awg color-coded LS-PVC (Low-Smoke PolyVinyl Chloride) insulated stranded (7×26 stranding) bare copper conductors, with conductors cabled/twisted together at 4.8 left hand twists/ft, covered in a foil shield (100% coverage aluminum foil/mylar tape backing with foil side facing out), with 24awg stranded tinned copper drain wire and nylon ripcord, all in a blue LS-PVC jacket.