CRYSTAL QUEST Countertop Replaceable Single Fluoride PLUS Water Filter System Contains Synthetic Aluminum Oxide adsorbant media specifically designed to have a high affinity for Fluoride, Lead and Arsenic. It removes metals through a mixture of adsorption and chemical reaction with the media; therefore, the elimination is not reliant on ion exchange. It has uniform particle size, is physically stable and can be used over a wide pH range. Capacity: 4500 ppm Fluoride (Avg. 1000 to 1500 Gallons) .* As high as 11000 ppm F+ with effluent levels below 0.2 ppm from 10 ppm F+ feed. Also effectively removes lead and arsenic. A diverter valve switches between filtered and unfiltered water. Adjustable spout for more convenience. Sits on the counter and easily connects to most kitchen faucet. Dimensions: 5"L x 13"H x 5"W