Your home should be your sanctuary, starting with the air you breathe. Filtrete 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. For optimum performance, change your filter every 90 days or sooner.Helps promote a healthy home by reducing airborne dust, allergens, bacteria & viruses 4x better small bacteria and virus capture Refers to bacteria and viruses that are less than 1 micron in size Electrostatically charged to attract and capture microscopic airborne particles Carries a 1500 Microparticle Performance Rating (MPR) Lasts up to 3 months Designed with Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through Captures microscopic particles including: smoke, cough/sneeze debris, bacteria, viruses, and large particles like lint, dust and pollen. Electrostatic air filter with Microparticle Performance Rating 1500 3 times better at small particle capture compared to non-electrostatic pleated filters for the capture of 0.3 to 1.0 micron particles.