Photo 1 of 10 Packs Pre-Filter B+ HRF-B1 Activated Carbon Replacement Filters Compatible with HHT-080 HHT-081 HHT-085 HHT-090 HHT-100 HHT-145 HHT-149 HPA-245 HPA-249 HPA-050 HPA-150 HPA160 Air Cleaner Purifier

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Photo 1 of 10 Packs Pre-Filter B+ HRF-B1 Activated Carbon Replacement Filters Compatible with HHT-080 HHT-081 HHT-085 HHT-090 HHT-100 HHT-145 HHT-149 HPA-245 HPA-249 HPA-050 HPA-150 HPA160 Air Cleaner PurifierPhoto 2 of 10 Packs Pre-Filter B+ HRF-B1 Activated Carbon Replacement Filters Compatible with HHT-080 HHT-081 HHT-085 HHT-090 HHT-100 HHT-145 HHT-149 HPA-245 HPA-249 HPA-050 HPA-150 HPA160 Air Cleaner Purifier