Cubic Meters
A cubic meter is a metric unit of volume which is the equivelent space occupied by a cube with 1 meter on each of its sides.
Denoted by symbol "m³", it is a unit of measurement in the International System of Units (SI) and is generally used for larger volume measurements.
US dry gallons
A US dry gallon is a unit of volume measurement normally used for dry goods such as grains, fruits, and vegetables. It is about 4.40488 liters or 0.16 cubic feet.
Note: The US dry gallon is different from the US liquid gallon, which is used for measuring liquids and is slightly smaller in volume.