Vornado MD1-0024 Replacement Screen Trays for Air-Purifier, Silver, 2-Pack Contains two (2) genuine Vornado Silver screen Trays Fits Vornado air purifier models PCO200; PCO300 and PCO500 Reacts with UV light to break down harmful viruses; bacteria and gases Vornado disposable Silver screen Trays 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.