TEU means twenty-foot equivalent unit, which is a shipping container whose internal dimensions measure about 20 feet long, 8 feet wide, and 8 feet tall. It can hold between 9 and 11 pallets, depending on whether they are standard pallets or EUR-pallets. Two TEUs have the capacity of a single FEU.
FEU means forty-foot equivalent unit, which is a shipping container whose internal dimensions measure about 40 feet long, 8 feet wide, and 8 feet tall. It can hold between 20 and 24 pallets, depending on whether they are standard pallets or EUR-pallets.