Filtrete Ultra, Allergen, Bacteria and Virus Air Filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high-performance filters help improve your home’s air quality. They collect 2X more virus and bacteria particles compared to the Filtrete 300 filter. Your home should be your sanctuary, starting with the air you breathe. Filtrete Ultra Allergen, Bacteria & Virus Air Filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high-performance filters help improve your home’s air quality. Create a filter change countdown in the Filtrete Smart App. Simply use the app to scan the barcode on your filter’s packaging, then choose 30, 60 or 90 days for your replacement countdown. When the lifespan is up, you’ll get a notification to change your filter.