HEPA air filter
High-Efficiency Particulate Air (HEPA) filter is a mechanical air filter designed to capture at least 99.97% of airborne particles as small as 0.3 microns. Made from tightly woven fibers, typically fiberglass or polypropylene, HEPA filters are known for their exceptional filtration efficiency. They are commonly used in air purifiers, HVAC systems, and vacuum cleaners to improve air quality by trapping dust, allergens, mold spores, pet dander, smoke particles, and some bacteria and viruses.