The Trio Portable includes multi-stage filtration and PRO-Cell™ Technologyodor and VOC reduction. The Trio Portable is ideal for homes and offices without forced air ductwork or for extra protection in any room. CLEAN The Trio includes four stages of filtration to ensure your air is clean. The pre-filter collects particles as small as 5.0 microns*, while two layers of charcoal activated filters remove odors and smoke. The final stage of filtration is a hospital grade HEPA filter that traps tiny microscopic particles as small as 0.3 microns such as dust, dander, and pollen. PURE Bacteria, viruses, mold, and fungi are neutralized or inactivated by a high output UVC germicidal lamp with 150 times the UV intensity of the sun. The patented PRO-Cell™ grid magnifies the power of the UV lamp making the Trio Portable one of the most powerful air purifiers on the market. FRESH Fresh air exits the Trio Portable, after it passes through 722 square inches of Titanium infused PRO-Cell™. The patented PRO-Cell™ Technology transforms odors, smoke, and volatile organic compounds (VOCs) into fresh healthy air.