One of the top designations/certifications awarded by the International Facility Management Association, CFM for Certified Facilities Manager.
To convert cmh to cfm ..... divide cmh by 1.7 to convert into cfm....
Tr = cfm/400
750 CFM
1tr = 400 cfm
5-10 cfm = -5
CFM International was created in 1974.
Cubic Feet per Minute (CFM). A measure of how much air moves in a minute, measured in cubic feet (the amount of air which fits inside a box 1 foot wide, one foot high, and one foot long). Most vacuums and fans are rated in terms of CFM. It tells how much air gets moved in a given length of time. More CFM is usually better, but it usually comes at the cost of more noise.
the throttle body is rated at 330 cfm
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About 500 cfm
A rough number would be 0.8 CFM / sq ft