http://www.engineeringtoolbox.com/sc...fm-d_1012.html SCFM versus ACFM and ICFM - Engineering ToolBox Engineering Toolbox http://www.engineeringtoolbox.com/scfm-acfm-icfm-d_1012.html SCFM versus ACFM http://www.engineeringtoolbox.com/scfm-acfm-icfm-d_1012.html SCFM versus ACFM SCFM versus ACFM and ICFM - Engineering ToolBox