CFM is a unit used to quantify which of the following?

• A. Cubic feet per minute
• B. Cubic meters per minute
• C. Cubic feet per hour
• D. Cubic meters per hour

Answer: (A)

CFM measures airflow rate, specifically how many cubic feet of air move through a space in one minute. This makes it the standard unit for evaluating ventilation performance because it directly describes air movement per minute, which is crucial for maintaining proper temperature, humidity, and odor control in animal facilities. The correct interpretation is cubic feet per minute. The other options describe either metric units (cubic meters per minute) or the same volume per hour (cubic feet per hour or cubic meters per hour), which are not what CFM denotes.