so my case is the galaxt 3 blue bubble light PC case. the side has a small 80mm intake fan, its covered by a grill. i want to put an air filter on it since its the only intake fan. i dont want to put the air filter on the inner sid of my case because it wont be as effective (fan pushing particles onto the filter i suppose), but if it put it on the outside, will i be able to put the grill and the filter on the same side, ill be using one of those thin plastics bordered filters.