Replacement 4-pack Carbon Pre-filters Compare to Whirlpool 8171434k
This aftermarket filter contains a carbon-based filter, which is designed to help remove common household odors  including dust, pollen and smoke. Use this item with Whirlpool air purifier models AP300, AP350, AP450 and AP510. Factory sealed in plastic.  Product Descriptionaftermarket 4-PACK Qty, Activated Carbon pre-filter with mounting tabs, Fits Whirlpool AP35030, AP45030, & AP51030 air purifiers .This is not a Whirlpool OEM product and is not covered under any Whirlpool manufacturer's warranty. The Whirlpool brand names and logos are the registered trademarks of their respective owners. Any use of the Whirlpool brand name or model designation for this product is made solely for purposes of demonstrating compatibility.