Multi-Stage Fluoride In-Line Filter is designed for use on refrigerators with ice-makers and/or water through the door. It may be used with water fountains, water coolers, commercial coffee makers and ice machines as well. High-pressure quick-connect fittings can be used on 1/4" o.d. copper or plastic tubing.FeaturesSix-Stage Filtration ProcessCartridge contains fine-mesh pre-resin media (SIR-900) to reduce fluoride molecules to below 0.5 ppm. The filter capacity is up to 11,000 ppm with effluent levels below 0.2 ppm from 10 ppm feed. Note: high pH and high bicarbonate levels reduce capacity - above 100 ppm bicarbonate, reduction by 50%; above 200 ppm, reduction by 75%. Also effectively removes arsenic. Attractive white housing. SpecificationsDimensions: 5" x 16" Weight: 6 lbs Flow rate: 0.75 to 1 gallon per minute