Heat Stress begins at around 68 degrees.  Installing fans is the first line of defense in the war against heat stress.  Not all fans are created equal.  The Cyclone Plus has been engineered to move the highest amount of CFM in a 72" fan so that you do not have to install a fan on every available support in the free stalls.  Less fans mean less cleaning, less belt replacement, and less motors to maintain. 

Less fans = less Stress.