Diagrammatic view of Air Flow inside a Refrigerated Container

In a Reefer container, cool air is circulated to wrap the cargo. In order to maintain this circulation, the floor is built with T-shaped rails. There is a red warning line to show the maximum load level so cargo will not be loaded up to the ceiling, which would hamper airflow. Additionally, if the cargo is loaded right up to the door, the circulation of cool air will be stopped and it will lead to a rise in temperature.