[Compatibility]For Air Purifier Models AP1512HH AP-1512HH, replaces Part 3304899. [2 Stage Filtrarion]H13 True HEPA filter captures 99.97% of airborne particles down to 0.3 microns. Activated carbon cotton filter eliminates houshold odors from pets, cooking and smoking. [Easy to Install]For AP-1512HH filter replacement for disposable and easy to replace , no tools required. It is recommended to replace the True HEPA Filter every 12 months and carbon filters every 6 months, to improve the performance of the air purifier. [True HEPA Filter]Whether you're looking for a replacement filter for pets, cooking, smokers, true HEPA filter replacement for is perfect for homes and offices, no more nasty smells in your house. Keep fresh air quality and comfortable living environment . SET: SET B-4 x filter cotton FOR AP1512HH Material: composite material colour: white+black Package Contents: 2 x filters 4 x filter cotton Only the above package content, other products are not included. Note: Light reflection 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.