No, no the grills that encase your teeth in shiny jewelry. I mean the checkered metal that case fans are either in front of or behind. When I put my hand behind my computer, I dont feel alot of air being moved out. I was considering cutting out a portion of the metal grill from the back of the computer and front intake fan of the computer that seemingly restricts this airflow. Obviously this would allow more dust into the system, which isnt good, but if I dusted it more often would this be beneficial to keeping my system cool?