Compatibility: The Ac400 Replacement Filter Is Compatible With The Luftrum Ac400 And Loniko Ac400 Air Purifier. | | 2-Pack True Hepa With Activated Carbon: Premium H13 Grade True Hepa Filter, Creating Fresh And Purified Air For Your Family. | | Regular Replacement: To Achieve Optimal Performance, Please Replace The Filter Regularly To Keep Your Machine Fresh And Clean. For Best Results, Remove The Filter Once A Month And Clean It Gently With A Soft Brush Or Vacuum. | | Simple Installation: Change The Replacement Filter In A Minute, No Tools Required. Note: Please Remove The New Filter From The Plastic Bag Before Placing It Into The Machine. | |