Sharp FZP35HFU Plasmacluster Air-Purifier Replacement Filter Set Set of replacement air-purifier filters traps 99.97-percent of harmful particles Effective against pollen, mold, dust, bacteria, smoke, pet dander, and more Treated with antimicrobial coating for additional defense against viruses For use with Plasmacluster FP-P35CX air purifiers; replace every 5 years Measures approximately 12-2/3 by 16 by 1-1/2 inches