By definition - a face cord should be 1/3 of a cord of wood -- or 42.66 cu. ft. of wood
There is no such definition. There is no definition for ANY measure of firewood except the CORD, which is 128 cu feet.
People use the term 'face cord' to describe any stack of wood that is four feet high and eight feet long but are all over the place in defining the length of the split. According to some, six inch splits would qualify as a Face Cord. As would 16 inch splits. Or a 24 inch split.
I see people arguing all the time about a "Rick." Some people say it is a third of a chord. Others say four ricks make a cord.
Too many regional and local terms and definitions for those terms.
As educated members of this forum we should stop using any term but CORD and fractions thereof!
A cord being, generally, a tightly packed stack of wood measuring four feet x four feet x eight feet but regardless of the dimensions, totaling 128 cubic feet.