Filtretre Allergen, Bacteria, and Virus Smart Furnace Filter, 20" x 20" x 1" is designed to provide advanced filtration for your HVAC system, ensuring cleaner and healthier indoor air. This innovative filter captures microscopic particles such as bacteria and virus-carrying particles, along with larger contaminants like mold spores and pollen. Equipped with Bluetooth connectivity, it allows you to monitor filter performance and lifespan through a user-friendly app. The app actively tracks filter life, alerts you when it’s time to replace the filter, provides insights on your home's air quality, and tips to enhance it. Ordering filters is also made easy via the app. The Filtrete Smart Allergen, Bacteria, and Virus Furnace Filter a smart, convenient solution to maintain optimal air quality in your home. Model Number: S2002-4