Ok ive got one 120mm fan on back blowing out and one 80mm fan on side blowing out. What should the front fan be blowing or sucking? (Its located infront of the hard drive bay).
Fronts and sides are usually intakes (blowing in).
Backs and tops are usually exhaust (blowing out).
These "usuallys" are subject to change depending on the setup desired. Positive - Negative - Neutral.