Alen designs, manufactuers, and distributes portable air purification units for businesses and homes. We are the top-rated air purifier company on Consumer Reports for the past three years. Our purifiers handle up to 99.97% of all airborne particulates such as dust, dander, pollen, mold spores, viruses, bacteria, smoke and odors. We have six different sized units and three different Medical Grade, HEPA 13 filters to choose from.