The Fellowes AeraMax Pro AM4S PC is 99. 99% effective against coronavirus* and is the perfect portable air purifier for large shared spaces; delivering 3-5 air changes per hour (ACH) in 650-1100 square feet shared spaces. Thanks to the combined power of PureView EnviroSmart technology, AeraMax Pro is the only air purifier that automatically responds to occupancy and air quality levels and then shows you when the air is clean. Proprietary and patented EnviroSmart technology uses an array of sensors to continuously monitor occupancy and room air quality and automatically adjusts to clean the air and the integrated PureView screen shows real time air quality data. The 4-stage True HEPA filtration system removes over 99% of all airborne contaminants. Fellowes AeraMax Pro air purifiers were demonstrated through independent laboratory testing to be effective in reducing aerosolized airborne concentration of Human Coronavirus 229E in a test chamber, reaching 99. 99% airborne reduction within 1 hour of operation. 99. 99% effective against coronavirus*. The only air purifier that automatically responds to occupancy and air quality levels and then shows you when the air is clean. Delivers 3-5 air changes per hour (ACH) in 650-1100 square feet shared spaces such as classrooms and conference rooms. Quiet operation. Patented EnviroSmart technology continuously monitors and automatically adjusts performance based on air quality and occupancy. PureView screen shows real time air quality data, the percentage of particles captured and a live status of room air quality. 4-stage True HEPA filtration system removes over 99% of all airborne contaminants. Antimicrobial HEPA treatment prevents bacteria growth on the filter and activated carbon filter reduces odors and VOCs. Commercial grade floor stand air purifier with 5-year limited warranty. Compatible with Hybrid Filter 9436902. Compatible with Hepa Filter 9416602. Compatible with Carbon Filter 9416502. Compatible with Carbon Filter 9436802. Compatible with 3/4" Pre-Filter 9600501. Compatible with Carbon Filter 9416502. Compatible with Carbon Filter 9436802. Compatible with 3/4" Pre-Filter 9600501. Includes wall plug. Commercial grade portable air purifier with proprietary smart sensor technology and integrated air quality display.