Elkay's replacement filters for countertop bottle fillers are essential for maintaining the efficiency and effectiveness of your water dispensing units. These filters, such as the WaterSentry Plus 51300C, are specifically designed to fit Elkay and Halsey drinking fountains and bottle fillers. They feature a quick-disconnect, 1/4 turn installation process, making them easy to replace without requiring professional assistance. Each filter has a capacity of up to 3000 gallons, ensuring long-lasting use before a replacement is necessary​