Usage Tips:for Philips AC1215 AC1214 AC1210 AC1213 AC1212, AC1216 AC1217 AC2729 Dimension HEPA filter 36027527mm Dimension Activated Carbon filter 36027510mm Replacement HEPA filter air purifiers. Longer life, easy to clean and easy removal. Designed to capture 99% airborne allergens, pollutants and formaldehyde, keeping dust and harmful particles away from to help us enjoy healthy life. To keep the air purifier in excellent working condition and capacity, this replacement filter is a great choice for you. It is recommended to replace the HEPA filters every 3 months for more effective filtration. Tips: 1,These are not the / products,what we sell are Compatible Replacement Products. 2,Package include all kits show in pictures which option you selected above. 3,If package lost or broken in transit ,we will refund money to you,you should contact us ASAP. We will help you to resolve the problem. 4,Please give us the opportunity to resolve any problem.We understand the unhappiness you might have if the order go wrong,but we will try our best to give you the satisfying results.