Relying solely on line pressure and without use of pump, FLEXEON LP-Series Light Commercial Reverse Osmosis Systems utilize light commercial grade cartridges with Twist-Lock™ Integrated Locking System, which makes replacement secure and quick. Available with sediment filtration, coconut shell carbon, calcite, DI resin, and phosphate, FilterMax® Cartridges are interchangeable, which allows for complete customization based on feed water quality needs and application.