The Filtrete Ultra Clean Air Purifier is an air purifier designed for use by individuals with asthma, allergies, or respiratory disabilities. The filter captures 99.9 percent of large airborne allergens like pollen, mold and dust mite debris, and also captures microscopic allergens like smoke, smog, household dust, pet dander, bacteria, and particles that can carry viruses. Features include a filter change indicator and a three speed fan. SIZES: For small room (approximately 160 square feet) or large room (approximately 360 square feet). COLOR: White.