Tell him that the early settlers in America ate pizza . and you plan on restarting that tradition unless you get help , because you LOVE our country and demand the old ways come back . pizza , cinnamon rolls and the 2 liters brought by the native Americans They liked decaff to be specific . <| sep |> I believe the 200 R comes with the fan that ' s mounted on the back as an exhaust . With that in mind , I would get 2 SP series fans and mount them on the front as intake fans , and the top stays open . This way no dust will get inside the case because you will have positive pressure , 2 intakes and 1 exhaust . This way , the air is going to naturally be pushed outside the case from the top . Of course , this is only true while the PC is turned on . When it is off , dust will build up from the hole on the top , but if you clean it like twice a year , you ' re gonne be fine .