CL3 Plenum rated which means they are coated with a special material that releases less toxic gas if the cable were to catch fire. The lower toxicity makes the wire safe to burn, making it a much better alternative to standard HDMI cables in the event of a fire or overheating. This added safety is key because it provides the protection necessary to put HDMI cables inside walls while still complying with the National Electric Code. CL3 wires can handle 300 volts and are intended for use in commercial settings. High speed HDMI cable with ethernet Compatible with 4K UltraHD, 1080p, 3D and QHD CL3 rated up to 300 volts CL3 Plenum Rated for In-wall or In-ceiling Installation CMP fire rating certified for plenum spaces and high rises (Equivalent to CSA FT6 rating) 30AWG
