This is a 1000ft non-terminated gray unshielded twisted pair PVC copper patch cable. The Cat6 cable is a standardized twisted pair cable for Ethernet or other physical network layers. Cat6 standards specify performance of up to 250MHz. This plenum-rated cable is the only cable allowed in spaces defined as air plenum-rateds such as raised flooring systems and air handling ducts. plenum-rated cables must self-extinguish and prevent re-ignition. Unshielded twisted pair patch cables are perfect for data centers LANs and other short range network connections. Our patch cables are 100% compliant for all of your networking needs. Our products are guaranteed by federal law to not affect or void OEM warranties.