Dell DCDO Fan User Manual


 
Quick Reference Guide 11
Leave 10.2 cm (4 in) minimum clearance on all vented sides of the computer
to permit the airflow required for proper ventilation.
If your computer is installed in a corner on or under a desk, leave 5.1 cm
(2 in) minimum clearance from the back of the computer to the wall to
permit the airflow required for proper ventilation.
If your enclosure has doors, ensure that they allow at least 30 percent
airflow through the enclosure (front and back).