Product Description This Waterdrop refrigerator filter, despite its affordable price, offers the best – a mix of prior filtration performance and important certifications from the well-known regulatory body in the industry – NSF 42 and NSF 372 certificates. Please note it fits DA97-17376B (HAF-QIN), not DA29-00020B (HAF-CIN).If you have been looking for a way to reduce harmful impurities from your drinking water, the solution is here. This Waterdrop refrigerator filter effectively filters off contaminants from your water. These include heavy metals, chlorine, mercury, copper, cadmium, VOCs, chromium, THM, and other suspended particles tested by the third-party laboratory. While the impurities are reduced, every beneficial mineral in your water is kept, ensuring that your body functions properly. Supreme filtration Safe materials International certifications [Top-notch filter material] Here, you are getting a significant improvement to the less-efficient charcoal filter that relies on coal, wood, walnut shell, and apricot shell to filter water. The filter material in this filter is a 100% Sri Lankan selected coconut shell carbon block, with 2x larger surface area and more micropores.[Fresh-tasting water] The 100% coconut shell carbon block can adsorb more impurities than low-priced and mixed carbon block. The Waterdrop refrigerator filter significantly improves the taste of drinking water to bring you a unique experience.[Monthly install stickers] You do not have to go the extra mile to monitor your refrigerator filter’s lifespan. This Waterdrop refrigerator filter is shipped with complimentary month install stickers that help track the service life at all times. Now you know when you have exhausted the 316 gallons or 6 months of pure water, depending on the water conditions.