Breathe in cleaner fresher healthier air with a helping hand from the vonhaus true hepa air purifier r r the air purifier boasts an advanced multi layer 4 filter system with 4 stage air purification to eliminate impurities in indoor environments r r pre filter eliminates larger airborne pollutants greater than 20 micron such as dust and animal hair r r powerful true hepa filter then eliminates more than 997 of micro sized airborne pollutants larger than 03 micron bacteria harmfu