Comprehensive's Commercial In-wall Speaker cable takes the performance worries out of your installations. The jacket for this cabling is manufactured with High-Grade PVC and is flame retarndent and has sequntial markings every foot to aid in the precise measuring and cutting for ease of use during installation. The Commercial In-wall speaker cabling comes in multiple configurations such as, 14AWG 2 and 4 conductor as well as, 16AWG 2 and 4 conductor, and utilizes 99.9% pure copper strands. Another great feature of this durable cabling is the ability to hold together when stretched or using multiple twists and turns during the installation run. As well as having a Lifetime Warranty, this UL rated cabling is RoHs compliant. All of Comprehensive's Commercial In-wall cable is available in 500ft. or 1000ft.spools. "When it has to work, It has to be Comprehensive."