The DA29-00020B Samsung filter removes many contaminants from your water like chlorine, lead, and other unwanted minerals that could potentially be harmful to your health. The OEM Samsung DA29-00020B replacement has been tested and certified to pass NSF/ANSI Standard 42 and Standard 53, meaning it has been certified to purify your water of chlorine and other impurities. The aftermarket ClearChoice CLCH105 and filters are a compatible replacement with many of the same features as the Samsung DA29-00020B, but at a much lower price. Don't let the price fool you, however. The ClearChoice has comparable filtering abilities to the OEM. We recommend the aftermarket filters due to their lower pricing and their excellent filtration. The primary difference between the OEM and aftermarket filters is price and NSF/ANSI ratings, though some non-NSF/ANSI rated filters are still constructed with NSF/ANSI rated parts. As always get free shipping and returns on all discount filters.