Elkay WaterSentry Plus Hydration System Replacement Water FilterWater filters provide cleaner, great tasting water for drinking fountains, water coolers and bottle fillers. All of our filters are made with activated carbon to improve taste and odor. Many also reduce contaminants such as lead. Elkays filters are easy to connect and are self contained replaceable cartridges, limiting exposure to contaminated media. UPC: 094902604039 Manufacturer Part No: 51300C Brand Name: Elkay Sub Brand: WaterSentry Plus