Keep your indoor air fresh and pure with the NaturalAire 20 in. W X 25 in. H X 1 in. D Synthetic 10 MERV Pleated Microparticle Air Filter. It is the perfect solution for improving the air quality in your home. This high-quality air filter is designed to capture microparticles as small as 0.3 microns, ensuring cleaner and healthier air for you and your family. With a MERV rating of 10, this filter is able to remove a wide range of contaminants such as dust, pollen, pet dander, and bacteria. Made with synthetic materials, it is durable and long-lasting.