Achieving Ambient Air Quality. Industrial air cleaners can be used effectively to capture almost any type of indoor air pollutant. Some applications include welding, grinding, sanding and machining. Effective Controls East offers a complete line of commercial and industrial air cleaning equipment from Airflow Systems, Industrial Maid, and Filter-1. Each type of air cleaner is available in many different sizes and configurations. Air flow capacity ranges from 400 cfm (cubic feet per minute) to 20,000 cfm. These units are available in portable and stationary models. The choice to use a portable unit or install a stationary unit will depend on several factors, such as the availability of floor space, wall space and whether the unit will be used to collect pollutants from more than one location.