The CPI GlobalFrame® Gen 2 Cabinet System features two specific configurations that meet most application requirements. It features perforated front and rear doors to support front-to-rear airflow for hot aisle/cold aisle or aisle containment applications. This high-density cabinet comes with a top-mount Vertical Exhaust Duct that guides hot exhaust air away from the cabinet to support a closed return application. For enhanced usage, the 45U cabinet comes with adjustable-depth Z-shaped mounting rails that helps block bypass airflow around equipment, cable openings in the top panels that are large enough for high-amperage PDU power plugs, casters to easily position the cabinet and locking doors and side panels to secure equipment.