The characteristic of this aviation air filter is that the frame is made of aluminum alloy profiles and equipped with a fiberglass high-efficiency filter. Compared with the filter material made of meltblown material, the fiberglass filter paper makes the air filter mesh more stable in efficiency and will not decay quickly. High efficiency air filters are required for passenger aircraft. This type of high-efficiency air filter for civil aviation can achieve a filtration efficiency of over 99% for particles as small as 0.3 microns, and can effectively filter out pathogenic microorganisms attached to the particles. This type of filter is also known as V-bank type filter, commonly used in high-volume filtration systems and industrial production. The size can be customized according to requirements.