Our Stealth RO 300 with the upgraded KDF 85/catalytic carbon filter has it already installed. Removes 98%+ of all contaminants in your tap water. Leading the industry in efficiency, the Stealth has a 2:1 waste to product water ratio. Optional 1:1 ratio flow restrictor saves 50% more waste water. Customized for gardening and hydroponics. The Stealth RO 300 produces 300 GPD of ultra pure water. Includes: 3-stage RO unit, 2 RO membranes, carbon filter, cleanable sediment filter, automatic shut-off cartridge, wall mountable metal bracket, garden hose connector, inline shut-off, 8 ft RO and drain line, 5 ft inlet line, filter wrench and instructions. Membrane Power Flush Kit now included. Unit size: 18.5 in x 16 in x 6 in and weight: 12.5 Ib.