Product review (3 stars): I needed an exact size to fit my vintage camper ...
I needed an exact size to fit my vintage camper.  The listing says "17.7 x 18.5 x 21" (or something close to that).  I assumed (never assume!) the 17 inches was width because WIDTH IS ALWAYS FIRST!!  But no, the 18.5 is the width.  DANG that causes me lots of extra work.