The ZeroWater 5 Stage Advanced Filtration Replacement Filter comes in a pack of 2, designed for compatibility with ZeroWater systems. This filter features a 5-stage filtration process using carbon/charcoal and deionization methods to effectively remove chlorine taste and odor from water. Made of plastic, each filter weighs 1.3 lbs and is suitable for both commercial and household use, providing clean and refreshing drinking water.