Only Applicable To Air Purifier Kj-300L. | | Up To 5 To 12 Months Service Life. | | Pre Filter, Cold Catalyst Filter (Ungraded Activated Carbon), And Hepa Filter 3 In 1. | | Remove 99.97% Particles Of Dust, Smoke, Pets Dander, Odors, And So On. | | Certificated By Epa, Etl, Carb, Fcc. | |