C2G 25ft Plenum-Rated 3.5mm Stereo Audio Cable with Low Profile ConnectorsAudio video installations in educational and commercial settings often require plenum rated cabling. Our plenum rated line was engineered to overcome common challenges faced by installers. Low profile connectors (1. 5in total depth) save valuable space and enable easier in wall connections. And our small diameter (0. 25in) cable design further reduces the space and clearance required to run the necessary cabling through walls and plenum air spaces.