|“||You might fill a container (like the StorAll) with anything: weapons, electronics, artifacts, personal effect... even live animals!||”|
–Comm-Link Engineering "Cargo Interaction" 
Crates size is defined as every container by Standard Cargo Units which is the exterior dimensions of the container in cubic meter increments.
Crates is also defined by the Number of Ports which represents the available number of discrete slots into which items can be placed.
For example, a 2SCU and 63Port container would have the following characteristics:
- 2.5m x 1.25m x 1.25m container
- 2.25m x 1.0m x 1.0m available interior space
- 63 slots of available space