When you purchase a Samsung American or French Style fridge freezer with a water and ice dispenser. Whether the filter is located inside or outside the refrigerator you could be sipping on ice cold drinks at the touch of a button. Simply refer to your refrigerator digital panel for filter light indicator. When it is time to replace the filter, the light will turn red. You may also place a date sticker (included inside every cartridge package) on the filter as a reminder. Purchase only Samsung Genuine water filter cartridge for authenticity and guaranteed performance. Be careful with other brands or imitations with cheaper price and claiming compatibility with Samsung filters. Only Samsung genuine filters have guaranteed quality fits to your Samsung refrigerator. - Samsung HAF-QIN Water Filter White