Pre-filter captures airborne large pollutants, like a pet hair, etc..
The H11 HEPA filter guarantees compliance with official standards for filtration HEPA 99.97 % of all airborne pollutants to 0.3 microns. In addition, the filter prevents the accumulation of mold spores, fungi and other odor-causing bacteria.
Active carbon filter captures harmful chemicals like benzene, toulene, formaldehyde, ammonia and common odours.