51300C - WaterSentry Plus Replacement Filter for Bottle FillersElkay 51300C WaterSentry Plus Replacement Filter (Bottle Fillers) Water 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. Features Make sure this fits by