This OM4 plenum distribution fiber cable is composed of 2-24 colored tight buffers, aramid yarn, and an OFNP outer jacket. All component materials meet the EU RoHS and REACH Directive standards. Pricing (CAD) Filter the results in the table by unit price based on your quantity. A. The dry block, sunlight resistant indoor/outdoor, tight buffer riser-rated cable line offers the system designer the ultimate in premises optical fiber cable utility. Fiber optic cable is designed to transmit data using light signals instead of electricity, making it faster, more secure, and immune to electromagnetic interference compared to traditional copper cables.