Access Control, 16c (#18-3pr, #16-4c, #18-6c), Shielded, Outer Jacket, CMR. Access Control Cable, Riser-CMR, 3-18 AWG pairs, 4-16 AWG conductors, 4-18 AWG conductors, 2-18 AWG conductors, All conductors stranded bare copper with polyolefin insulation, Each cable has overall Beldfoil® shield and PVC jackets, Overall PVC jacket. Data Sheet.