HEPA-AIRE® Portable Air Scrubber from Abatement Technologies® captures and controls airborne dust particles while increasing productivity & reducing clean-up time. The PAS1200HC Portable Air Scrubber is designed to employ up to four filter stages to remove potentially hazardous airborne particles. This unit features a backward curve blower and a high-speed motor to pull particles through a four-stage filtration system. The variable airflow control is from 150 cfm to 900 cfm. There is also the capability to daisy-chain multiple units together. Portable Air Scrubbers are made for easy use, manageable in small spaces, and flexible for any type of project.