GREAT VALUE: This is a replacement filter for air purifiers, to help effectively filter airborne particles for healthier living. Each filter includes 1 LifeSupplyUSA True HEPA Filter Replacement Compatible with Hunter 30920 30905 30050 30055 30065 37065 30075 30080 30177 Air Purifers Air Purifier (3-Pack). Approximate dimensions are: 13.5' x 10.51' x 0.75' inches COMPATIBILITY: Compatible with Hunter 30920 30905 30050 30055 30065 37065 30075 30080 30177 Air Purifers Air Purifier Filters. Please note that this is not an OEM product. This is a replacement product by LifeSupplyUSA, exclusively for sale by LifeSupplyUSA. QUALITY HEPA: High-Efficiency Particulate Air (HEPA) design will capture very fine particles and irritants. It targets airborne particles such as dust, lint, dirt, pet hair, dander, pollen, and more.