- 50 Pair 66 Wiring Block- Designed for voice and data applications- Performance exceeds Category 5e connecting hardware requirements specified in TIA/EIA-568-B.2- Durable and strong high impact flame retardant material- Mounts on wall or on ICMB89B0WH 89B mounting bracket- Used with IC066BC025 66 wiring block bridging clips IC066CV050 66 wiring block cover and IC066LS050 66 wiring block labeling strips- UL Listed and ROHS Compliant