This holds up six 4KPROIP encoders or decoders withing a 5U rack space. Fits standard 19" rack assemblies and allows units to be mounted forward or backward. An L-bracket on each carrier unit provides secure mounting. Mount encoders/ decoders vertically in any of 4 orientations for optimized cable management. Supports ideal airflow through units for proper cooling in the rack. Enables neat installation and cable management. It is RoHS compliant； built using environmentally-safe materials and construction.