HONEYWELL AIR PURIFIER FILTER REPLACEMENT – Use of this Honeywell Pet Odor Filter along with the pre-filter and HEPA filter can help reduce pet odors up to 3.5x faster.* PET ODOR FILTER – This air purifier filter is formulated with activated carbon and zeolite to help reduce and adsorb pet odors. EXCLUSIVE DESIGN – This air purifier filter is designed exclusively to fit Honeywell Air Purifier models HPA3100/3200/3300 in the PowerPlus line, HPA5100/5150/5200/5250/5220 & HPA5300/5350 Series in the InSight line. Replace specialty filters 4x per year. COMPATIBLE DOES NOT MEAN COMPARABLE PERFORMANCE – 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 BRAND YOU CAN TRUST – Improve your air quality and neutralize odors for a cleaner breathing experience year round with Honeywell air cleaners, purifiers and humidifiers.