Multi-Conductor Cable, 16 AWG, 4 Conductor, Plenum, Unshielded, White

A "multi-conductor plenum unshielded" cable refers to a cable with multiple conductors designed for use in plenum spaces (air circulation areas within a building), and without any shielding to protect against electromagnetic interference; essentially, it's a multi-wire cable rated for plenum applications that does not have a metallic shield around the conductors, often used for low-voltage applications like security systems, intercoms, and audio wiring.