Comprehensive's Plenum Pro AV/IT 18G 4K Active HDMI Cables were designed specifically for commercial and residential system integrators as well as technology professionals in education, corporate, government, houses of worship and other demanding commercial environments. 25ft, 35ft and 50ft lengths utilize advanced active chip technology to deliver a full 4K 18G signal with 4:4:4 Color Space signal. Cables are active and directional.Plenum Pro AV/IT 18G 4K Active High Speed HDMI cables come equipped with all the latest HDMI features including Ultra HD 4K@60Hz 4:4:4 chroma sampling and 18Gbps bandwidth rating (end to end), transmission of High Dynamic Range (HDR) video, Ethernet, Deep Color, up to 32 audio channels with ARC, support for wide angle theatrical 21:9 aspect ratio.Comprehensive's exclusive ProGrip connector helps secure the connection with up to 16lbs of retention force to prevent cables from being unintentionally disconnected and un-wanted service calls!Other exclusive features are Comprehensive's SureLength cable length indicators that clearly indicate the length of each cable on the connector mold - huge time savers for integrators and installers who are constantly sorting out lengths preparing for jobs!Comprehensive Pro AV/IT cables are constructed using a true professional grade 99.9% High Purity copper 24 or 26 awg center conductor and a premium low capacitance dielectric that provides significantly improved performance compared to standard HDMI cables. Triple shielding including 85% tinned copper braid shielding provides superior rejection of EM and RF interference.A CL2P plenum rated jacket makes this the perfect cable for both commercial and residential installations. Heavy Duty construction and secure molded strain relief provides unsurpassed durability and a lifetime of worry-free use. All lengths are active and directional.Since 1974, Comprehensive Pro AV/IT Series Cables have been trusted by Pro AV and IT systems integrators because of their legendary reliability, performance and value. That's why they have been the "go to" cable worldwide for boardrooms, huddle spaces, classrooms, data centers, schools, government installations, stadiums, broadcast studios, stages and other mission critical applications. Pro AV/IT Series Cables are also perfect for anyone looking for professional quality connectivity at a great price.Active HDMI cables may not be fully compatible with some Apple® adapters. An Apple® adapter may not supply the sufficient voltage for the chipset in an active cable and it also may prevent bi-directional HDCP communication between source and display. Please use our passive HDMI cables for applications where an Apple® adapter may be used.