2nd guess the builder. 😉
Have a look at this photo of a system installed in a P180 case.
http://www.pugetsystems.com/pic_disp.php?bid=378
With no fan installed in the top blow hole, should the hole be closed off so as not interrupt the flow of air from the front vents across the MB and out the back? Also what do think about the open slots where add in cards would go? I know NOTHING about case cooling, but this just looks strange to me.
Have a look at this photo of a system installed in a P180 case.
http://www.pugetsystems.com/pic_disp.php?bid=378
With no fan installed in the top blow hole, should the hole be closed off so as not interrupt the flow of air from the front vents across the MB and out the back? Also what do think about the open slots where add in cards would go? I know NOTHING about case cooling, but this just looks strange to me.