"Effective" airflow and "exhaust" are "completely" "essential" to "preserving" the desired" level of cleanliness" within a "sterile area". The system" must "meticulously" manage" "dust" by "continuously" "filtering" https://unidirectionalairflowcle201421.wikicommunications.com/7760986/airflow_and_ventilation_the_foundation_of_cleanroom_purity