Complete Filter Replacement Set Whirlpool Whispure AP450 AP510 1183054 1183054K (1) 1 Filter set of AF brand Premium HEPA Filter & 4 Carbon Carbon Pre Filters Designed to fit Whispure Air Purifier Models # AP350, AP450 & AP510 Compared to Whirlpool Part # 8171434K, 1183054, 1183054K, 1183054K Large, 1183054K Remove 99.7% allergens and other invisible airborne particles.