For me, a 2x4x6+, 3x3x6+,2.5x5x6+...
exhaust...
6 inch inline 240CFM fan, 6 inch to 4 inch (expander/reducer), hooked to 4x16 inch CF, works really well! It gives a great exchange rate, while maximizing the efficiency of the CF, because the entire surface of the CF will contribute to...