1.[Compatible] The HPA300 R filter is compatible with Honeywell Air Purifier HPA100, HPA200, HPA300. Also compatible with Honeywell Air Purifier 5000 Series, including HPA090, HPA250, HPA5200, HPA5220, HPA5250, HPA5300, HPA5350, HPA8350. Replaces Honeywell R filter part number HRF-R3, HRF-R2, and HRF-R1. HEPA Filter R Dimensions: Height: 10.2 ft x Length: 6.5 ft x Width 1.6 ft 2.[H13 True HEPA Filter] The HPA300 HEPA filter helps absorb 99.97% of airborne particles as small as 0.3 microns. Our premium HEPA filters are effective against pollen, dust, pet dander, smoke, and other pollutants in your home. It can also solve household odors, industrial gases, and wildfire gases. This filtration system provides a comfortable air environment for your home. 3. [High Efficiency Filtration] The HPA300 filter R is suitable for Honeywell air purifiers, made of upgraded high-quality non-woven fabrics, and uses the latest advanced low-energy consumption and low-density structure technology to make the filtration efficiency higher and work with your Honeywell air purifier to maximize filtration performance. 4. [Cost-effective and convenient] The package contains 6 HEPA R filters, which can be installed quickly and easily to help you improve air quality and create a comfortable home environment faster. It can remove small particles, odors, and smoke from the air. Ensure that you can breathe in a comfortable home. To ensure air quality and the normal operation of the filter, please replace the HEPA filter R regularly.