(Cubic Feet per Minute) The measure of volume of air. When testing systems, find the CFM by multiplying the face velocity times the free area in square feet. The face velocity is the amount of air passing through the face of an outlet or return. Free area is the total area of the openings in the outlet or inlet through which air can pass. Found on http://www.encyclo.co.uk/local/21074
(Cubic feet per minute) A rating that expresses the amount of air a blower or fan can move. The volume of air (measured in cubic feet) that can pass through an opening in one minute. Found on http://www.homebuildingmanual.com/Glossary.htm
A rating that expresses the amount of air a blower or fan can move. The volume of air (measured in cubic feet) that can pass through an opening in one minute. Found on https://operations.fs.cornell.edu/info/ir_glossary.cfm