Compatible with Honeywell air purifiers in the HPA090, HPA100, HPA200, and HPA300 series. Specifically fits HPA090 (HPA-090), HPA100 (HPA-100), HPA200 (HPA-200), and HPA300 (HPA-300). Includes three replacement filters: HRF-R3, HRF-R2, and HRF-R1. The purifier model requirements are: - HPA300 requires 3 R filters - HPA200 requires 2 R filters - HPA100 requires 1 R filter Replacement is recommended annually. Function and compatibility - The three HRF-R series filters are designed to replace the corresponding Honeywell R filters in the HPA series purifiers. - These filters are sized and configured to fit the filter slots in the HPA090, HPA100, HPA200, and HPA300 units, ensuring proper airflow and filtration performance. - Replacing with the correct R filters maintains the purifier’s efficiency and airflow. What you get and how it helps - A ready-to-use three-filter pack (HRF-R3, HRF-R2, HRF-R1) for compatible Honeywell HPA models. - Preserves filtration performance to help reduce airborne particles and maintain indoor air quality. - Designed for straightforward replacement with standard installation in the HPA series. Use scenarios - Pet ownership: reduce pet dander and common household particulates to improve room air quality in living areas. - Allergy management: substitute filters to support cleaner air in bedrooms and offices for easier breathing and better sleep. - Odor and smoke control: in kitchens or common areas, maintain lower levels of cooking odors and smoke particulates. Installation and maintenance - Follow the Honeywell purifier manual for replacement steps and order of installation if applicable. - Replace the filters annually, or more frequently if the purifier is used heavily or in highly polluted environments.