The Honeywell R HEPA Replacement Filter is certified to help capture up to 99.97% of the following microscopic airborne allergens and particles as small as 0.3 microns: dust pollen pet dander dust mite debris and smoke. Certified to help capture up to 99.97% of the following microscopic airborne allergens and particles as small as 0.3 microns: dust pollen pet dander dust mite debris and smoke. Compatible with: HPA094 / HPA100 / HPA200 / HPA250 / HPA300 / HPA3100 / HPA3200 / HPA3300 / HPA5100 / HPA5150 / HPA5200 / HPA5220 / HPA5250 / HPA5300 / HPA5350 / HPA8350 series