1.[Perfect Compatible with MORENTO HY4866 Air Purifier]Our air purifier filters is Specially designed to compatible with the MORENTO HY4866 air purifier, WESTHEY HY4866 air purifier and YIOU M1 Air Purifier. (search for B0C1MPDTG7,B0CMTMJ5TV, B0CS5NR75S,B0BM9JVLYT) NOTE: Please check the model before purchase 2.[Powerful 3-Stages Filtration]Our HY4866 hepa filters are fully compatible with MORENTO air purifier, includes Fine Pre-Filter, True HEPA Filter and Honeycomb Activated Carbon Particles. This system provides a comfortable air environment for you and your family 3.[Multiple Stack Filtering Technology]Our HY4866 air purifier replacement filter adopts honeycomb activated carbon, compared with other activated carbon filters, activated carbon has better purification effect and longer life to maintain the air purifier's peak performance.It is a good choice for families with pets 4.[Money saving Package]This package contains HY4866 True HEPA original filters x 4 Pack,You can enjoy high-quality HY4866 replacement filter elements for less money. (Same manufacturer as the morento air purifier replacement filter).The life of the filter is generally 2200 hours. Recommend you to replace the filter each 6 months and please press and hold the switch to restart after replacing the filter 5.[Quality assurance]HY4866 air purifier replacement filter to ensure compliance and comply with HEPA test standards,which can be combined with MORENTO HY4866 air purifier, WESTHEY HY4866 air purifier or YIOU M1 Air Purifier to ensure optimal performance. Trust us, If you have any product quality problems, please consult us, is dedicated to ing ers top-notch and affordable air purifier filters