Ideal for any medium sized room. Great for capturing or minimizing allergens in the air including pet dander, smoke and lingering odors. The 3-in-1 compound HEPA filter is designed to reduce 99.97 percent of allergens, pollution and odors. Negative ion function reduces airborne bacteria. Four-stage fan control to circulate air flow with additional sleep mode for reduced noise level. Adjustable timers settings at one, two, four and eight-hour increments. Convenient light indicators notify you when child safety lock is on or filter needs replacement. Filter lasts for up to 720 hours of usage. Filter included. Air Cleaner Machine Type: HEPA; CADR: 200; Maximum Room Size (Square Footage): 215 sq ft; Maximum Room Size: 10 ft x 20 ft.