ond air filter is made with electrostatically charged filter media that captures airborne allergens smaller than 1 micron, such as bacteria, particles that carry viruses, pollen, pet dander, mold spores and fine dust.MERV 13 ratingNo ad ... more Product Info Accumulair Diamond Air Filter 16x20x4 - 6 pack - FD16X20X4-6 The Accumulair Diamond air filter is made with electrostatically charged filter