①Stainless Steel Pre-Filter Washable and Reusable for up to 20 years. ②Bio-Guard Filter Washable and Reusable for up to 20 years. ③Ozone Emission Removal Filter Reusable for up to 20 years. Not Washab

Nuwave Whole House Air Purifiers, Oxypure Smart Air Purifier with 5 Stage Tower Structure Air Filter, Air Quality & Odor Sensors, Sleep Mode for Bedroom, Remove 99.99% of Dust, Smoke, Pollen, Allergen