Pur DS1800Z Water Filter Dispenser The PUR DS1800Z water filter dispenser holds approximately 1 gallon of water. The dispensers narrow sleek build fits neatly in the refrigerator or sink for refilling. Fits conveniently in the sink for refilling with a special filltray design that helps distribute weight. The slim spacesaving design makes optimum use of your refrigerator shelf. The handles make it easy to fill and carry. The removable tray is easy to clean. It should be cleaned with mild soap and a dry towel. The filterlife gauge indicates when the filter needs to be replaced.