QUIETPURE Whisper Bedroom Air Purifier - Three Stage HEPA Filtration with Carbon and Negative Ionizer - Perfect for Bedroom, Office, and Small Rooms Purifies the air in rooms up to 350 square feet in size. Perfect for bedrooms, offices and smaller-sized rooms. Offers smart, automatic operation and an air-quality indicator light for real-time feedback. HEPA filter removes allergens and contains carbon for improved removal of VOCs, chemicals and odors. Three air-filtration stages with auto mode that automatically adjusts fan speeds based on the rooms air quality. A programmable timer function allows for effortless operation day or night. Dimensions: 8.5" D x 12" H; Weight: 3.74 lbs. 1 Year Warranty.