Mishimoto's Race Line High-Flow Fans are their highest flowing range of fans.Combining relatively slimline designs with high flow fan blade configurations and high flow-rates, these are ideal for the most demanding applications.These fans are available in four sizes. The 10 Inch fan offers 1600 CFM and comes in a housing only 10.9 inches in diameter and 97.5mm deep.The 11 Inch fan offers 1700 CFM and comes in a housing 11.9 inches in diameter and 94mm deep.The 12 Inch fan manages 1850 CFM and comes in a housing 13" in diameter and 98.1mm deep.The 16 Inch version offers 2200 CFM and comes in a 16" housing, 110mm deep.The 10, 11, 12 inch versions are not reversible. The 16 inch fan is reversible for mounting in a push configuration.Size Chart: