Crystal Quest Countertop Replaceable Double Fluoride Water Filter System Water travels through 7 stages of filtration. First, through a 6-stage cartridge Then through a FLUORIDE REMOVAL cartridge. containing fine-mesh pre-resin media. Provides 10,000 gallons (1-3 years)* of quality safe and pure water. Connects to any kitchen faucet. A diverter valve switches between filtered & unfiltered water.Adjustable spout for more convenience. Designed in an attractive white housing.