Rowenta XD6075 True HEPA Filter Allergen Remover for PU4020 Intense Pure Air Bedroom Auto Purifier Captures up to 99.97percent of pollution with true HEPA filtration including dust, pollen, pet dander, virus, bacteria, mold, exhaust and more Replace every 3 years Room coverage up to 400 sq. ft. Fits PU4020 intense pure air Purifier