Filter airborne irritants such as smoke, pollen, dust, mold spores, pet dander and fabric fibers with the Medify Air MA 40 Medical Grade H13 HEPA Room Air Purifier for 800 sq ft. This air quality essential features medical grade H13 filters which are higher rated than true HEPA. The white air purifier comes with a built-in particle sensor with visible air quality indicator by color. The unit is designed with Stalinite touch panel operations, four fan speeds, an eight hour timer, night mode and child lock.