Quite a few customers frequently ask us the difference of OFNR&OFNP when they inquire optical cables,SZOPT has lots of types of indoor cables,OFNR&OFNP is common cable jacket,let’s explain for you:

OFNR is the short term of optical fiber nonconductive riser, and OFNR cables are used in Riser areas which are building vertical shafts or runs from one floor to another floor;

OFNP is the short term of optical fiber nonconductive plenum,and OFNP cables have fire-resistance and low smoke production characteristics. They can be installed in ducts, plenums and other spaces used for building airflow. This is the highest fire rating fiber cable and no other cable types can be used as substitutes.