Wall mounted, No plug - hard-wired, 5 fan speeds, clean areas up to 110m?, enviroSmart Technology, 4 levels of Filtration, front-loading filter change, PM2. 5 Odour/VOC Motion and Sound Sensor Technology, PlasmaTrue Ioniser. REMOVES OVER 99. 99% OF COVID-19 In a recent test, Fellowes AeraMax Pro AM3 & AM4 air purifiers demonstrated to eliminate COVID-19, using a combination of smart and integrated technologies. Fellowes AeraMax Pro AM3 & AM4 air purifiers demonstrated, through independent laboratory testing, to be effective in eliminating aerosolized concentration of SARS-CoV-2 by 99. 9999% through a single air pass test of the purifier. Got a big room to clean? Then get the AeraMax Professional IV. It s designed for rooms from 60m? to 110m?, like conference rooms, classrooms, fitness studios and cafeterias. It s also perfect for common areas and places where people congregate often. Because it removes up to 99. 9% of airborne contaminants, you re assured a truly next-generation cl