West Penn 227 is bulk Commercial Speaker cable with 2 conductor, 12 awg, PVC jacketed, Non-Plenum. It acts as both Speaker & Control Cable and is unshielded. Applications Indoor for Speaker Level, Audio Circuits, Low Voltage Power, Background Music. Rating: NEC Type CMR or CL2R, (UL)-C(UL) Listed SEE PG 252, Meets 300V requirements as specified in the NEC, Flame Rating: UL1666.