This is slightly off topic, but related.
We have a series of racks that are positioned properly, but the a/c units are off at an angle. The net result is heat buildup in between the rack rows. It's a small lab.
My thinking is installing wall-mounted (or rackable) fans on the wall in the middle of each aisle that blow outward... circulating the heat buildup.
I'm curious what others would advise here.