Clean up the air in your home with this Levoit personal desktop air purifier. The three-stage filtration system with a HEPA filter removes allergens, dust, odors and smoke, while the discreet design with quiet fans maintains the serene atmosphere in your home. This Levoit personal desktop air purifier has a three-position fan speed dial for controlling ventilation, and the powerful 35W design is effective in rooms of up to 161 sq. ft. Up to 161 sq. ft. purification capacity To help keep the air clean and fresh. True HEPA filter Captures 99.97% of particles, including pollen, mold, pet dander and dust. Micron mesh prefilter and washable deodorizing filter help remove irritants and odors from the air. Know when to change a filter Recommend to replace filter every 6-8 months. A light indicator turns on when the filter needs to be replaced. Variable speed selector Allows you to easily choose 3 fan speeds for custom operation. Silent Operation Filters the air as quietly as 32dB at the lowest speed for a restful and soothing indoor environment, helping you sleep deeply.