Replacement HEPA Filter Compatible with Hunter 30936. Compatible with Hunter QuietFlo Air Purifier Models: 30058, 30085, 30090, 30095, 30105, 30117, 30119, 30130, 36095, 36117, 36127, 37090, 30999. HEPAtech filtration process captures and traps airborne particles and irritants down to the size of dust, dirt, pollen, pet dander, mold spores, fabric fibers, and smoke. For optimal performance, it is recommended replacing filter every 12-months (dependent on air quality and use). Approx. Dimensions: 13 3/4' x 10' x 2 1/4' - By LifeSupplyUSA.