The Everpure AMS-4021XLE is a high-performance reverse osmosis membrane replacement cartridge designed for use with BWS1500 and OP1200 systems. This cartridge effectively reduces contaminants, ensuring the delivery of clean, great-tasting water. Engineered for durability and efficiency, the AMS-4021XLE enhances the overall performance of your water filtration system. With a streamlined design, it allows for easy installation and maintenance, making it an essential component for maintaining optimal water quality in your home or business.