Keep your rooms allergen free with this AeraMax SV air purifier from Fellowes. This model actively captures up to 99.95% of airborne particles as small as 0.1 microns, including allergens, such as pollen, dust and pet dander. The pre-filter removes visible airborne particles, the carbon air filter actively removes pet odours, smoke odours and volatile organic compounds. The AeraSmart Sensor monitors air quality and automatically adjusts the fan speed to keep your air purified. With a four speed fan with 24 hour, ultra-quiet operation. Maintains the air quality of large rooms, meeting halls and other shared spaces. Designed and engineered for long term use backed with a 3 year warranty.