1. Compatible Models: The HPA300 R Filter is designed to fit Honeywell Air Purifiers, including HPA100, HPA200, and HPA300 models. It's also compatible with the 5000 series such as HPA090, HPA250, HPA5200, HPA5220, HPA5250, HPA5300, HPA5350, and HPA8350. This replacement filter corresponds with Honeywell R Filter Part # HRF-R3, HRF-R2, and HRF-R1. Filter dimensions: H: 10.2" x L: 6.5" x W: 1.6". 2. H13 True HEPA Filtration: The HPA300 HEPA Filter captures 99.97% of airborne particles as small as 0.3 microns. It effectively combats allergens such as pollen, dust, pet dander, and smoke, ensuring cleaner air in your home. This filter also addresses household odors, industrial gases, and wildfire smoke, promoting a healthier indoor environment. 3. High-Efficiency Performance: Constructed from upgraded, high-quality non-woven fabric, the HPA300 Filter utilizes advanced low-energy technology and a low-density structure to enhance filtration efficiency. This ensures optimal performance in conjunction with your Honeywell Air Purifier. 4. Cost-Effective & Easy Installation: Each package contains 6 HEPA R filters that can be installed quickly and easily, optimizing air quality in your home. Regular replacement of the HEPA filter R is essential for maintaining effective filtration, allowing you to breathe cleaner, safer air. Use Scenarios: - Perfect for households with pets, eliminating pet dander and odors while improving air quality. - Ideal for allergy sufferers, providing a significant reduction in airborne allergens for a more comfortable living space. - Great for urban environments, effectively filtering out smoke and industrial pollutants for fresher indoor air.