Box 6 : A unit of volume, usually informal but standardized in certain industries. In the U.S., a box of citrus fruit contains 1.6 bushels (56.383 liters)
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}