Swift Green Replacement Water Filter W80, fits Whirlpool 4396508, WFNL300, NL240, WFL400V, WFL500, WF-300BR, PUR 4396547 Reduces chlorine taste odor (CTO), volatile organic compounds (VOC), cyst, atrazine, asbestos, mercury, and lead. By Americans for Americans. Made in USA. Buyers beware of counterfeiters, always buy from a Swift Green Filters authorized dealer or distributor. High-quality, eco-friendly water filter(s) produced by the leading brand in environmentally friendly water filter products Produced using coconut carbon, which contains 50% more micropores for reducing contaminants, providing cleaner, healthier, and better-tasting drinking water Certification: WQA Gold Seal certified according to ANSI 42 standard for material requirements