Filtrete Allergen Defense 18" x 24" x 1" Pleated Air Filter, MERV 13, 4/Carton (UA21-4CA)

"The Filtrete Allergens, Bacteria, Viruses & Air Pollutants Filter has the highest airflow among MERV 13 filters (2) while capturing microscopic particles like bacteria and particles that can carry viruses and large particles like mold spores and pollen. Filtrete MPR 1900 Air Filters, made by 3M, helps capture unwanted particles from household air to contribute to a cleaner, fresher home environment. Designed with exclusive Filtrete 3-in-1 technology, including a high MPR 1900 and MERV 13 rating, your AC filter will help pull and capture countless microparticles – such as pet dander, smoke, bacteria, and viruses while letting cleaner air flow through. Filtrete Filters also capture large particles, including lint, pollen and household dust. This filter is also certified asthma and allergy-friendly® (1). Use a 3-month pleated 1-inch home HVAC filter in your furnace, air conditioner or HVAC system. For optimal performance of your heating and cooling system or HVAC system, change your furnace filter at least every 90 days. Note: For easy replacement reminders, create a 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 filter’s life is up, you’ll get a notification to change your filter. The No. 1 Recommended HVAC Air Filter Brand (3), Filtrete Home Air Filters provide the technology needed to change how we clean our air, by filtering out particles both large and invisible, to help contribute to a cleaner, healthier home for ourselves and our families. Residential use only. (1) As outlined in report ASCR: 1246-01. (2) Based on California Energy Commission claimed data as of 1/29/2025. (3) Based on the 2024 Sago US Brand Health Study of Residential HVAC Air Filters."