Ionic air filter helps improve the air inside of your home. This filter is designed for use in a room up to 65 square feet Germicidal chamber helps kill germs and bacteria and captures up to 99.9 percent of airborne germs. The filter helps remove pollen, smoke, cold and flu viruses, dust, pet odors, mold spores, staph and strep bacteria. The portable design allows this filter to conveniently travel from room to room within your home. Sold as 1 EA.