Honeywell True HEPA Replacement Filter Fits Honeywell Console Models: HPA090 series, HPA100 series, HPA200 series, HPA300 series To ensure stated product performance, use only Certified Honeywell Replacement Filters Fits Models: HPA-090 Series, HPA-100 Series, HPA200 Series & HPA300 Series Captures up to 99.97% of airborne particles at .3 microns & larger For best performance replace once per year