Audio/video installations in educational and commercial settings often require plenum-rated cabling. The plenum-rated line was engineered to overcome common challenges faced by installers. The HD15 connectors are low profile (1.25in total depth) which saves valuable space in the gang box, while the rounded shape (fits 1.25in inner diameter mounts) accommodates smaller mounts so that the cable can be easily hidden from view. And the small-diameter (0.25in) cable design further reduces the space and clearance required to run the necessary cabling through walls and plenum air spaces.