Waterdrop Refrigerator Water Filter, Compatible with Bosch 640565, EVOLFLTR10 AP3961137, Whirlpool WHKF-R-Plus NSF CERTIFIED: Tested and certified by NSF 42 for chlorine, bad taste and odor reduction. QUALITY PERFORMANCE: Reducing most chlorine, sediment and other impurities, our filters deliver fresh and crisp water to you and your family. COST-EFFECTIVE CHOICE: Offers reasonable price without compromising quality, providing your entire family with healthier drinking water. REPLACEMENT MODEL: Will fit 640565, EVOLFLTR10, AP3961137, EFF-6026A, WSB-1, WSQ-1, Whirlpool WHKF-R-PLUS& more. Waterdrop is an independent brand. This filter is not an original product. 100% SATISFACTION GUARANTEED: We care about our customers and want you to drink only the purest water. If you have any issue about the product, please let us know. We have a professional customer service team that will take care of you.