Product review (4 stars): I use this for bottles, not cans.
For those of you who don't care about how many cans fit in this, and actually intend to store beer bottles and wine bottles instead, I have been your guinea pig.  If you play around with the shelves, it WILL fit 6 wine bottles comfortably in the bottom half, leaving enough room for air circulation.  The top half then has room for about 14 beer bottles (standing up) and 5 at the very top on their side.  (This involves removing one of the shelves completely and turning another one upside down.)  In this configuration it keeps them nice and cold, unlike a lot of other units.