Whispure 450 & 510 Filter Compat. for 1183054 HEPA Filter. This is a compatible Filters Fast Brand replacement filter for the following air purifier models: Whirlpool 450 Whirlpool 510 The FiltersFast Brand Whispure 450 & 510 Filter Replacement is a compatible version of the Whirlpool Whispure 1183054 HEPA Filter. This Whispure Replacement Filter captures 99.97% of airborne particles as small as 0.3 microns. The Whispure 450 and 510 filter replacement fits the following Whirlpool Air Purifiers: Whirlpool Air Purifier 450 and Whirlpool Air Purifier 510. FiltersFast Brand Whispure 450 & 510 Filter Replacement specifications: Dimensions: 15-3/4"x18-7/8"x2" Replace filter once a year Captures 99.97% of airborne particles as small as 0.3 microns Compatible replacement for the 450 and 510 models from Whirlpool The FiltersFast Brand Whispure Air Cleaner Filter captures airborne allergens like dust, smoke, mold spores and pollen. Replace your FiltersFast Brand Whispure 450 and 510 filter every 12 months for energy efficiency and optimum performance. Installation is quick and easy.