- Restrict horizontal air flow front and back
- We actually had computers trigger their overheat sensor
- Pull both hot and cold air
- Push air into ceiling, which may not be vented
- Do not apply cold air at the front of computer
- Reduce air presure when doors are off
- Waste cold air
- Move network overhead
- No door
- No fan
- Perferated tile in front
- Still the wrong wire opening. Need brushes.