Contains one (1) MD1-0022 Premium True HEPA Replacement Filter
Fits Vornado Whole Room Air Purifiers model AC300, AC350, AC500, AC550, PCO200, PCO300, PCO375DC, PCO500, and PCO575DC
H13 Grade True HEPA Filter captures 99.97% of all airborne particles 0.3 microns or larger, removes Allergens, Dust, Pollen, Pet Dander, Bacteria, Mold Spores, Dust Mites and more
Easy to replace, disposable, no tools required
Replace HEPA filter every 6-12 months, depending on use and environment