Looking for a reliable replacement filter for your Winix D480 air purifier? Look no further than the H13 True HEPA Air Purifier Replacement Filter D4 by our factory. Made to match the quality and durability of the original filter, this replacement filter is designed to effectively filter out pollutants, bacteria, and allergens from your indoor air. Featuring H13 class true HEPA filtration, it captures 99.97% of particles as small as 0.3 microns, making it ideal for people who suffer from allergies or sensitive respiratory systems. Trust in the quality of our factory-made filters to keep your indoor air healthy and fresh.