Vornado MD1-0027 Replacement Advanced Carbon Filter for Air-Purifier Contains one (1) genuine Vornado Advanced Carbon Filter Fits Vornado air purifier models PCO200; PCO300 and PCO500 Captures odors and large particles prolonging the life of the HEPA filters Vornado disposable Advanced Carbon Filters require no cleaning Easy to replace; no tools required Built to meet U.S. voltage requirements. Certified, safety-tested, and warrantied for use only in the U.S.