THE WORLDS FIRST WASHABLE ECO-FRIENDLY AIR PURIFIER The advanced, fast-drying, TPA technology filter can be washed and reused. THE ONLY LARGEST CADR AIR PURIFIER WITH THE LOWEST NOISE LEVEL IN THE MARKET FAST PURIFYING, LOW ENERGY CONSUMPTION ADVANCED 5-STAGE FILTRATION EVERY UNIT IS TESTED BEFORE SHIPPING / 1-YEAR LIMITED MANUFACTURER WARRANTY If the system does not provide 99.97% or cleaner air, it will not ship. SUGGESTED MAX SPACE 1000 square feet. Ideal for large spaces