These Genuine Honeywell Pre-Filters are designed exclusively to fit Honeywell Air Purifier models HHT-055/HHT-155/HHT-080/HHT-081/HHT-085/HHT-090/HHT-100/HHT-145/HHT-149/HPA-050/HPA-150/HPA-245/HPA-249/HPA-248 Series, HPA060 Series, HPA160 Series. B+ Pre-Filters: Captures larger airborne particles and activated carbon reduces odors & VOCs (from the air that passes through the filters). Contains 2 filters.. In the Box: 2 Carbon B+ Pre- filters. Pre-Filter should be changed every 3 months.. B+ Pre-Filters: Captures larger airborne particles and activated carbon reduces odors & VOCs (from the air that passes through the filters). For best performance, use only Genuine Honeywell air purifier filters. Compatible air purifier filter replacements are not guaranteed to offer the same performance, efficiency or fit.. Contains 2 pre-filters. Maximizes life of the air purifier's primary filter. Fits most Honeywell Tower air purifier models including: HHT-080, HHT-081, HHT-085, HHT-090, HHT-100, HPA060 series, HPA160 series, HPA-050, HPA-150, HHT-145, HHT-149, HHT-013, HHT-011, 16200. Also fits Vicks models: V9070 and V9071