In the Box: 1 Honeywell HEPA Filter R R HEPA Filters: Captures up to 99.97% of airborne particles at 0.3 microns from the air that passes through the filter hepa Replace Honeywell HEPA Filters once every year HEPA Air Purifier Filters Fit Honeywell Console Models: HPA090 series, HPA100 series, HPA200 series, HPA250 series, HPA300 series, HPA3100-HPA3300 series, HPA5100-HPA5300 series and HPA8350 series