The Honeywell Certified HEPA Replacement R Air Purifier Filters HRF-R3 in a 3 pack are designed to efficiently filter out airborne particles and allergens from your home. Made by the trusted brand Honeywell, these filters use true HEPA filtration technology to capture 99.97% of airborne particles as small as 0.3 microns. Ideal for use in air purifiers, these filters are a reliable and effective solution for maintaining clean and healthy air in your living space. Made in China, these HEPA filters provide a high level of filtration to help improve indoor air quality.