Container installation apparatus and container

A container that is installed inside a container installation apparatus with a plurality of the containers stacked one on top of another in an up-down direction, the container comprising:

• a housing part that stores a housed object inside thereof,
• an engagement part that is provided in at least left and right side surface portions of the container and that is used to engage with a holding part provided in left and right inner wall portions of the container installation apparatus;
• a mixing prevention part of foreign object that is provided in an upper portion of the container and that is used to prevent a foreign object from being mixed into an inside;
• and
• leg parts that are provided in a lower portion of the container and that form a hollow space inside the leg parts, wherein
• a height of the hollow space is set to such a height that, when the plurality of containers are installed inside the container installation apparatus while being stacked one on top of another, a gap is formed between a bottom surface of the housing part of the upper container and a top portion of the mixing prevention part of foreign object in the lower container.