Improve your indoor air quality with the GermGuardian AC4825W 4-in-1 Air Purifier. Perfect for allergy sufferers, the HEPA filter captures 99.97% of dust and allergens as small as .3 microns in size! More than just a filter, the UV-C light helps reduce airborne bacteria, viruses, mold spores* and works with Titanium Dioxide to reduce volatile organic compounds. Standing 22 inches tall, it is lightweight and ideal to use in rooms up to 153 sq. feet. Includes a UV-C control and a filter change indicator. Choose from 3 speeds, including a low speed that runs ultra-quiet. To lengthen the life of your filter, a 4 pack of the carbon filters is also available (model FLT22CB4). UV-C Replacement Bulb LB4000.