Modular design. Modular design provides scalable solutions to add cooling as demand increases. One-way locking door. It secures the hot aisle while allowing for quick exit in case of emergency. EcoLEDgy driven lighting. It integrated high efficiency LED lighting with on/off motion sensors. Over aisle access. Tooless removal of individual panels to allow access above the aisle for cabling and maintenance. Efficiency. It increases the capacity of the air conditioner by supplying a warmer return air temperature. Ceiling tiles. It closes off the top of the aisle to prevent mixing of the hot and cold airstreams in the IT environment. Scalable densities. It allows for higher densities to be achieved by integrating containment with room, row and rack cooling system architectures. Safe slide doors. Emergency break away sliding door enables quick exit in the event of an emergency. Active airflow control. Monitors and actively adjust cooling unit airflow in containment systems, while providing visibility to effective cooling to critical IT equipment. Fire safe system. Alerts personnel and drops ceiling panels based on temperature to enable fire suppressions system in the room to extinguish the fire.