Fits Honeywell models: 50100, 50101.
Also fits Sears/Kenmore models: 83231, Hepa 100 (83239).

• Replaces Discontinued Honeywell 20590
• Consists of 1 HRF-11 stackable Universal Replacement HEPA Filters.
• Filter weave has been redesigned to be vacuumed. You can vacuum this filter twice a year for permanent use. For customers who prefer not to vacuum out trapped pollutants, recommended replacement is once every 1-3 years depending on use and environmental conditions.
• Genuine Honeywell Enviracaire True HEPA filters
• 99.97% effective at removing particles as small as 0.3 microns from the air that passes through the filter