Black Box 1,000Ft CAT6 Solid Bulk Cable 550-MHZ UTP Blue CMP Plenum, Box Premium high-speed cabling intended for Cat6 plenum applications Tested to 550 MHz/1 Gbps transmission rate High-quality 23 AWG UTP 4-pair solid copper wire with cross-member for added strength Plenum-rated Violet CMP flame-retardant PVC jacket with FEP insulation Guaranteed to meet or exceed ANSI/TIA/EIA-568-C.2 Category 6 and ISO/IEC 11801 Class E requirements.