Whirlpool 8171434K (8171434), 4-Pack (Large), Air Purifier Active Carbon Pre-Filters, Fits Air Purifier Model AP51030K, AP45030K, APR45130L, WP500, 18x16.5 inch

This filter contains a carbon-based filter, which is designed to help remove common household odors (such as smoke, cooking odors and pet odors). This filter conveniently captures 99.7-Percent of particles as small as 0.3 microns from passing through the air, including dust, pollen and smoke. Use this item with Whirlpool air purifier models AP300, AP350, AP450 and AP510.