The 3M Filtrete MPR 2500 Premium Allergen and Ultrafine Particles Air Filter is a high-performance MERV 14 rated furnace filter designed to capture countless microparticles from household air. This 4-pack of 16x20x1 inch filters features exclusive Filtrete 3-in-1 technology with permanently charged electrostatic fibers that act like a magnet to pull in and trap unwanted particles while allowing cleaner air to flow through.

With a 77% small particle capture rate, these filters help capture pet dander, smoke, bacteria, and up to 90% of airborne virus particles, as well as larger particles like lint, pollen, and household dust. The filters are Asthma and Allergy Friendly certified and work with furnaces, air conditioners, and HVAC systems. Each filter is designed for 3-month residential use and should be changed at least every 90 days for optimal performance. The Filtrete Smart App (iOS or Android) can set reminders for filter changes. Filtrete is North America's most trusted brand of HVAC filters and the number one recommended HVAC air filter brand.