The Samsung DA97-21041A Refrigerator Case-Filter is a genuine replacement part made for specific Samsung refrigerators. It's crucial to keep your water supply free of toxins and impurities so that you can continue to consume clean, fresh-tasting water. For best results, replace this filter, which is housed inside the refrigerator casing, every six months. https://www.hnkparts.com/da97-21041a-samsung-case-filter