GREAT VALUE: This is a replacement HEPA filter for air purifiers, to help effectively filter airborne particles for healthier living. GREAT VALUE: This is a replacement HEPA filter for air purifiers, to help effectively filter airborne particles for healthier living. COMPATIBILITY: Compatible with Winix PlasmaWave air purifier models 9000, 5000, 5300, 5000b, and 115115. Please note that this is a replacement product, not an OEM product. GREAT AIR QUALITY: 'High-Efficiency Particulate Air (HEPA) design will capture very fine particles and irritants. USED BY PROFESSIONALS: LifeSupplyUSA Air Purifiers Filters are made to be durable & efficient for months. SAVE MONEY by ensuring the maximum airflow supply volume & protecting your device. SIMPLE TO INSTALL: Installation is easy; no tools required. Simply remove and replace from your air purifier unit when needed.