The Austin Air Allergy Junior Air Purifier is designed to rid rooms of allergens, odors, and smoke. The device contains a carbon pre-filter, a HEPA filter, and a military-grade carbon cloth filter. Together, the filters trap particles of all sizes and prevents them from re-entering the air. In addition to making the air better for allergy and asthma sufferers, the Junior also eliminates harmful pathogens that cause illness. The unit is appropriate for use in rooms up to 700 square feet.