It allows integration of APC cable trough system with the Compaq rack and a special horizontal InfraStruXure rack-mount PDU, both of which are necessary to incorporate standard products into the system. Once the roof adapter kit is mounted onto the rack, the standard APC cable troughs can be utilized as needed. The InfraStruXure Rack-mount PDU (APC Part # AP7610), which installs in any 19" rack, monitors the power consumption of connected equipment.