The Elkay WaterSentry 51600C NSF Certified High-Capacity Water Filter ezH2O is a commercial water filtration unit designed for cold beverage equipment. With a capacity of 6000 gallons, this filter cartridge is made of plastic and has a micron rating suitable for multiple filtration types. Manufactured by Elkay in Taiwan, this unit is a reliable and efficient solution for providing clean and safe drinking water in restaurants and food service establishments.