[COMPATIBILITY]Compatible with MA-18 Air Purifier. Compare to Part Number MA-18R.These replacement parts for Medify Air Purifier with excellent performance and perfect fit.[3-IN-1 FILTERS]MA-18 Filters are made of 3-in-1 filtration systems including Pre-Filter, True HEPA Filter and Activated Carbon Filter.[LONG LASTING]Replacement filters are good for up to 2,500 hours or 3 to 4 months.[HIGH-EFFICIENCY]True HEPA Filter captures 99.97% of airborne pollutants as small as 0.3 Micrometers in size. Activated Carbon Filter Traps larger air contaminants, absorbs household odors from cooking, smoking, and VOC's. Prolong the life of the True HEPA Filter[Use]Easy to replace and dispose, no tools required.Fine Pre-Filter remove large particles such as hair, pet fur, dander and lint. True HEPA filter remove particles like household dust, and pollen, etc.Colour:blackMaterial:Composite materialPackage Contents:1 x Air purifier filter Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Time of shipment:All of product we can ship out within 5~8 weekday