2x2

The term "2x2" refers to the fact that the unit or structure takes up space equal to size 36.00 Collision in Warcraft III.

Common Units that are 2x2:
 * All Ranged Demon Hunters
 * All Demons
 * All Walls
 * All Enhanced Walls
 * Most Towers
 * All Demonic Towers
 * All Food shelters