BREATHE FRESH AND CLEANER AIR The GermGuardian Intelligent 22" Tower air purifier helps to reduce germs and viruses, filter odors, and trap allergens with 3 layers of protection. Containing a Genuine HEPA PURE™ filter, optional UV-C light, and an activated carbon pre-filter, this air purifier delivers refreshing air to your home. Your at home comfort can be customized on the seven segment display panel with auto mode + 3 speed settings and ultra-quiet mode on the lowest speed setting. The Intellisense air quality indicator measures the air quality 60 times per minute. It automatically adjusts the fan speed when poor air is detected and can monitor air quality 24/7. Circulates the air in a 153 sq. ft. room every 12.5 minutes or in a medium to large 743 sq. ft. room every hour, making it ideal for bedrooms, offices, basements, and other open concept spaces. Your purifier is only as powerful and effective as the filter you put inside, and our Genuine GermGuardian replacement parts are essential for maintaining product performance. Each filter or bulb is designed specifically for a particular unit. Not only will Genuine replacement parts fit like a glove, but they also have the combination technology to match. Replacement Parts: FLT4825 HEPA Filter B (plus additional specialty filters FLT4850PT, FLT4825VO, and FLT4825SM), FLT22CB4 Carbon Filter, and UV-C Bulb LB4000.