Category 3 cabling is commonly used for telecommunication systems. This Cat3 UTP 25-pair Bulk Wire is designed for computer networking and can achieve transfer speeds of 100 Mbit/s. CMR Rated, the PVC jacket on these Cat 3 UTP cables are flame retardant. Made from self-extinguishing plastic, 25-pair bulk telephony wiring is a great product for commercial buildings, able to control the spread fire. Length: Color: Gray