The PECO-HEPA Tri-Power air purifier filter features the combined forces of Molekule's own patented PECO technology that destroys viruses, bacteria, mold, allergens, VOCs, and more; True HEPA 99.97% particle-capture efficiency rate; and a layer of carbon filtration to reduce odors and toxic gases. New without the box; plastic packaging is sealed and unopened. Genuine Molekule filter, NOT a dupe. Left behind by a friend who moved away.