【Precision Compatibility】 A230 Filter Replacement Size O - 1712-0100-00 compatible with Winix A230 and A231 Air Purifiers. This 360° All-in-One 4-Stage True filter Air Purifier with PlasmaWave Technology ensures optimal performance. 【3-Stage Filtration】 This A231 Filter Replacement includes a Fine Mesh Pre-Filter, H13 True Filter, and Activated Carbon Filter. The Fine Mesh Pre-Filter acts as the first line of defense against large airborne particles found indoors. The Activated Carbon Filter effectively reduces household odors from cooking, pets, and smoke, ensuring a fresh and clean environment for your family. 【H13 True filter Technology】 The a231 air purifier replacement filter Size O captures up to 99% of dust, including pet hair, dust, pet dander, and smoke. This advanced filtration technology ensures you breathe in a cleaner environment , making it an ideal choice for improving your quality of life. 【Cost-Effective and Long-Lasting】 A231 Replacement Filter includes 2 high-quality Value Packs (1712-0110-00). Each pack is designed to last up to 12 months. This cost-effective solution ensures long-term filtration performance, saving you money and effort. 【Easy to Install】 Installing the A230 filter is quick and easy, requiring no tools. If you have any questions or concerns, our customer service team is available to provide you with a satisfactory solution. We guarantee 100% customer satisfaction. A230 Filter Replacement, 1712-0100-00 Replacement Filter O Compatible with Winix A230 and A231 Air Purifier,2 Pack