Increase air quality with the Air Purifier - Aller Air Model 4000 Exec UV. Great for cutting down on allergens in the air this purifier is a great addition to any home.Get the complete air purification system in one little cylinder machine. The AllerAir Exec 4000 UV Air Purifier gives you protection against airborne contaminants giving you cleaner air to breathe giving you a healthier life. The HEPA filter traps 99.97% of solid particles as small as 0.3 microns including bacteria, viruses, and allergens. The pre-filter traps the larger particles and can be changed and cleaned in less than 30 seconds. The UV germicidal lamp destroys DNA of any organism trapped on the filter or passing through. Airborne chemicals, gases and odors are trapped by the 10 lb activated carbon filter. The activated charcoal used in this filter is the material used in military gas masks so you know nothing is getting through. This room purifier works in areas as big as 1200 square feet in 30 minutes and has a low electricity usage. It only weighs 42 lbs and is on roll casters for easy mobility. The recirculation action of this air purifier's dual airflow system ensures the widest range of air purification. This incredible machine can help to reduce harmful micro toxins in you indoor air enabling you to breathe easier.