Honeywell HRF-F1 filter
-Replace Honeywell 21500 (for air purifier series 11520, 17200, 18150, 50150) with two HRF-F1
-Replace Honeywell 22500 (for air purifier series 12520, 17400) with two HRF-F1
-Replace Honeywell 24000 (for air purifier series 13520, 50250) with three HRF-F1
-Replace Honeywell 23500 (for air purifier series 50200) with two HRF-F1
-Replace Honeywell 29500 (for air purifier series 50300) with four HRF-F1
-Replace Honeywell HRF-14 with an equal number of HRF-F1
Each Honeywell HRF-F1 includes 1 filter and 1 gasket. Replace filter every 1 to 5 years depending on use. Our recommendation is to replace it annually.
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