Non-metallic and flexible corrugated cable raceway
General purpose for standard cable management requirements to future proof your home, but does not meet all the cable management requirements for air plenums, ducts, and other environmental air spaces.
It is not required for raceways to run Optical Fiber Cables (OFPN) and/or Communication Cables (CMP/CMP-OF) through plenums and other spaces used for environmental air Please check your local codes before use