Compatible Models: Lantiny HPA300 Filter fits Honeywell Air Purifier HPA300, HPA304, HPA200, HPA3100-HPA3300, HPA5100-HPA5300, and HPA8350 series. Replacement for Honeywell Filter R Value HPA300 Package: Package includes 3 x HPA300 HEPA Filter and 4 x Pre-Filter for Honeywell Air Purifier. HEPA Filter R Dimensions: 10.24 x 6.5 x 1.6 inches. Pre-filter A Dimensions: 14.2 x 13.1 x 0.2 inches Premium H13 Quality: Our HPA300 HEPA Filter adopt advanced lower energy consumption and lower density structure technology verified, with low wind resistance, higher efficiency for Honeywell Air Purifier Excellent H13 Filtration System: The HPA300 HEPA Filter for Honeywell HPA300 Air Purifier captures up to 99.97% of airborne particles as small as 0.3 microns in the air Easy to Install: You can replace your Air Purifier filter anytime, no tools required. We recommend to replace the HEPA Filter R every 6-12 months and the Pre-Filter A every 2-3 months for optimal performance LANTINY HPA300 HEPA Filter Replacement for Honeywell HPA300 Series Air Purifier HPA300, HPA300VP, HPA304, HPA3300, 3 Ture HEPA R Filter + 4 Pre-Filter Replace HRF-R3