Part of our best-selling series, this unit features an advanced medical-grade HEPA filter which removes at least 99.97% of all airborne particles at 0.3 microns. Ideal for those only concerned with dust, pollen, dust mites, pet dander and other airborne particles.It's cylindrical shape maximizes air flow, while casters provide for easy maneuverability. A variety of colors to choose from smart design, quiet fan system, low price and maintenance-cost are factors to consider when choosing an AllerAir 5000 H air purifier.UV is an excellent option for users who are concerned about mold, bacteria and viruses. We use only non-ozone producing germicidal UV bulbs. The UV light shines at a frequency and energy that breaks organic molecular bonds. As microorganisms pass by the UV rays this bond breakage translates into cellular or genetic damage