20x30x1 NaturalAire MERV 13 Filters, Case of 12

20x30x1 NaturalAire MERV 13 Filter. Features efficient electrostatic filtration media that helps capture unwanted particles in your home, including: Pollen, Pet Dander, Mold Spores, Bacteria, Microscopic Allergens, Virus Carriers, Smoke, and Smog Particles. It has the highest level of efficiency in a residential filter. This filter removes airborne particles, delivering the air flow you need to create a cleaner, fresher indoor environment. The robust construction makes the filter easier to install and ensures it will last up to 90 days in your home. Reduces up to 95% of large airborne particles.