Optimal Air Filtration: Experience cleaner, healthier air with our for Membrane Solutions MSA3/MSA3S Air Filter Replacement. Featuring an advanced 4-in-1 filtration system, this filter effectively captures up to 99.97% of airborne particles, including dust, pollen, smoke, and odors. H13 True HEPA Filter: Equipped with a high-grade H13 True HEPA filter, our product ensures the highest level of purity, trapping particles as small as 0.3 microns. Ideal for allergy sufferers and those seeking a fresher indoor environment Easy Installation: Designed for a perfect fit with the for Membrane Solutions MSA3 and MSA3S air purifiers, this replacement filter is easy to install, ensuring you get back to breathing cleaner air in no time Long-Lasting Performance: Our replacement filter maintains optimal performance of your air purifier, extending its lifespan and ensuring efficient operation. Replace every 6-8 months for best results Product Name: Filter Compatible Models: for Membrane Solutions MSA3/MSA3S HEPA Air Purifier Filter Main Function: Filters fine dust (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: HEPA Package Contents: 1 x HEPA Filter