Our HPA100 HEPA Filter Replacement is designed for Honeywell HPA100 Air Purifiers. It effectively alleviates uncomfortable symptoms caused by poor air quality. The True HEPA Filter, coupled with the High-Efficiency Activated Carbon Pre-filter, captures up to 99.97% of particles as small as 0.01 microns. It also decomposes household odors and allergens, ensuring your air purifier runs efficiently and quietly.