LG Refrigerator Model LSXS26366S Water FilterYour LG LSXS26366S water filter is one of those things you dont really think about until the water doesnt taste right. It uses an LT800P replacement water filter, built to fit properly and keep everything flowing smooth. No extra steps. Just works. It helps improve water quality with every pour, cutting down chlorine taste and everyday impurities. And yeah, its NSF 42 and 53 certified, so its actually doing what it claims. You might not notice it