Filtrete Advanced Allergen Air Filter 1500

3M Filtrete high performance Advanced Allergen Filters filters carry a microparticle rating of 1500 and capture small and large particles including smoke, smog and particles that carry viruses. These are the highest quality 1" air filters available from Filtrete. 3M Filtrete has several different sizes of the Filtrete Advanced Allergen Air Filters. The 4 most common sizes are listed below.