This Bionaire BAP1700 Air Purifier helps transform the air in your home: Up to 99% of pollen, dust, pet dander & mould spores are removed from the air passing through the long-life, HEPA-type filter. There's also an optional ioniser to enhance filtration, and a status indicator to let you know when to clean your filter. Approved by the British Allergy Foundation. Air quality sensor automatically adjusts the cleaning speed to suit the air quality of the room. Suitable for room size up to 74m². Quiet operation. 4 speed settings. Auto shut-off. HEPA filter. 99% filtration rate. Filter included. Washable filter. CADR rating smoke 110. CADR rating pollen 110. CADR rating dust 110. Size H68, W26, D17cm. British Allergy Foundation approved. Manufacturer's 2 year guarantee.