The Filtrete Allergen Defense filter attracts and captures microscopic allergens like dust, smoke, and smog particles and large allergens like mold spores and pollen. For residential use only.Filtrete MPR 1000 Allergen Air Filters Air Filter, made by 3M, helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment. Designed with exclusive Filtrete 3-in-1 technology, including a MPR 1000 and MERV 11 rating, your AC filter will help pull and capture countless microparticles – such as pet dander, smoke and smog – while letting cleaner air flow through. Your Filtrete Filter will also capture large particles, including lint, pollen and household dust. Use a 3-month pleated 1-inch home HVAC filter in your furnace, air conditioner or HVAC system. The No. 1 Recommended HVAC Air Filter Brand (1), Filtrete’s Home Air Filters provide the breakthrough technology needed to change how we clean our air, by filtering out particles both large and invisible, to create a cleaner, healthier home for ourselves and our families. Residential use only.