Works with Honeywell HEPA air purifiers for home: This Honeywell Filter Kit is designed exclusively to fit Honeywell Air Purifiers Air purifier replacement filters: This value combo pack of replacement filters for air purifiers provides a one-year supply for HPA300, HPA5300, HPA3300 & HPA8350 models; includes 4 A Pre-Cut Carbon Pre-Filters and 3 Honeywell R HEPA filters Compatible does not mean comparable: For best performance, use only genuine Honeywell air purifier filters. Compatible air purifier filter replacements are not guaranteed to offer the same performance or efficiency A pre-filters: the Honeywell A pre-filter for air purifiers captures larger airborne particles, and activated carbon reduces unpleasant smells and VOCs. Replace genuine pre-filters every 3 months R HEPA filters: These replacement filters for air purifiers help capture up to 99.97% of microscopic allergens such as pollen, pet dander, debris, and smoke, and should be replaced yearly