The Membrane Solutions MS18 Air Purifier is a comprehensive, compact solution for purifying the air in your home. With two powerful centrifugal fans, it delivers clean air at a rate of 110 CFM (187m³/h), making it ideal for rooms up to 825ft². It features a 4-stage filtration system, including a washable pre-filter, blue silver ion filter, H13 True HEPA Filter, and activated carbon filter. This air purifier removes 99.97% of particles as small as 0.3 microns and air pollution PM 2.5, and is perfect for smokers, pet owners, and allergy sufferers. The MS18 is also CARB-certified, and is completely ozone-free. With its physical keys, night light, timer, and sleep mode, the MS18 is a user-friendly and effective air purifier for any home.