PLENUM Rated 18/2 1000Ft Security Cable Stranded CMP - Alarm, Audio, Signal, Control Wire - In Wall CL2, CMR, and CMP PLENUM RATED 18/2 1000ft Pro-Installer Series - Blowout Priced - Limited Qty's Avail CMP,CMR,CL2 Rated for PLENUM, In-Wall or Riser Applications Professional Use Quality - Made in the USA! Stranded Bare Copper Wire Conductors - (never cheap cca aluminum) Will Receive Gray OR White Depending upon our current stock levels at OUR discretion.