Amazon.com: Whirlpool 8171434KS Genuine Charcoal Pre-Filter - Whishield Anti-Microbial Activated - Replacement Fit for Air Purifier AP51030K, AP45030K, APR45130L and WP500, Large - 4 Pack : Home & Kitchen
Carbon Replacement Compatible with Whirlpool 817500 Pre-Filter for Whirlpool Air Purifier Models APT30010M, APT40010R, APT42010M, APT50010M, 4 Pack
Activated Carbon Replacement for Whirlpool 8171434 Pre-Filter | Filter -Monster
Fits Whirlpool 817500 Pre-Filter for Whirlpool Air Purifier Models APT30010M 45399082978 | eBay
Repl. Whirlpool AP300, AP350 Air Purifier Carbon Pre-Filter, 8171434K
Amazon.com: Whirlpool Whispure Air Purifier WP500 (New Version of AP51030K) 490 sq ft Filtration with True HEPA and Carbon Pre-Filter 8171434K, 1183054K. Compact Odor Allergen Eliminator (WP500P-Pearl White) : Home & Kitchen
Whirlpool 817800 Genuine Charcoal Pre-Filter - Whishield Anti-Microbial Activated - Replacement Fit Air Purifier Portable Tower WPT80, Large - 4 Pack