Dyson DC19 DC20 DC21 DC29 Pre & Post Front & Back HEPA Filter Dyson Motor Filter Product description: Compatible with: fits for Dyson DC19 DC20 DC21 DC29 Vacuum Cleaning Robots Filters maintain for DYSON DC19 DC20 DC21 DC29 cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe. Easy to remove and replace as part of routine maintenance. Suggestion: For best results, filters should be replaced every 2 - 3 months. For DYSON DC21 DC29 HEPA filter substantially increases the amount of dust,pollen, pet dander and allergens captured by the innovative filter design. To keep your cleaner running at peak performance, the filter should be replaced every two months. Compatible for DYSON ALLERGY. How To Clean the Filter: 1.remove the bin by pressing the bin release button 2.open the bin door to empty the bin 3. now press and lift the filtered or release tab 4 .remove the filter by grasping the yellow tab 5.clean room was filter by tapping against your trash container 6.to reinstall the filter, press the metal filter lever,with the side of filter and push the filter down,the filter door will not close if the filter is not installed correctly Package includes: 1 x HEPA Filter for Dyson DC19 DC20 DC21 DC29 Washable Pre Motor Filter 1 X Pre-filter for dyson dc19 dc20 dc21 dc29