<P> As the TEU is an inexact unit, it cannot be converted precisely into other units . The related unit forty - foot equivalent unit, however, is defined as two TEU . The most common dimensions for a 20 - foot (6.1 m) container are 20 feet (6.1 m) long, 8 feet (2.44 m) wide, and 8 feet 6 inches (2.59 m) high, for a volume of 1,360 cubic feet (39 m). However, both 9 - foot - 6 - inch - tall (2.90 m) High cube and 4 - foot - 3 - inch (1.30 m) half height containers are also reckoned as 1 TEU . This gives a volume range of 680 to 1,520 cubic feet (19 to 43 m) for one TEU . </P> <P> While the TEU is not itself a measure of mass, some conclusions can be drawn about the maximum mass that a TEU can represent . The maximum gross mass for a 20 - foot (6.1 m) dry cargo container is 24,000 kilograms (53,000 lb). Subtracting the tare mass of the container itself, the maximum amount of cargo per TEU is reduced to approximately 21,600 kilograms (47,600 lb). </P> <P> Similarly, the maximum gross mass for a 40 - foot (12.2 m) dry cargo container (including the 9 - foot - 6 - inch - high (2.90 m) cube container) is 30,480 kilograms (67,200 lb). After correcting for tare weight, this gives a cargo capacity of 26,500 kilograms (58,400 lb). </P> <P> Twenty - foot, "heavy tested" containers are available for heavy goods such as heavy machinery . These containers allow a maximum weight of 67,200 pounds (30,500 kg), an empty weight of 5,290 pounds (2,400 kg), and a net load of 61,910 pounds (28,080 kg). </P>

How many grams can fit in a 40 foot container
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