With a height of 11-3/5 inches Carbon block filter designed for Bottle Filling Stations One filter 3000 Gallon (on avg. 1 year) capacity Chlorine, Lead and Cyst Reduction, Taste and Odor Improvement Spun Polypropylene prefilter mesh to prevent large, coarse sediment and particles from entering and clogging filter media This Filter is popular at schools, universities, gyms, churches, and hospitals and should be replaced every 6 to 12 months depending on usage.