The Pulse Bac 576 has 176 CFM and 97in of lift this little powerhouse is an industrial strength vacuum in a compact, portable package. The 176 CFM of airflow meets the OSHA Silica Rule, Table 1 requirement of 25 CFM per inch of blade for 7″ tools. High airflow combined with the 97 inches of lift means this model really punches above its weight.