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The British Berkefeld Big Berkey comes with 4 - 9in."Super Sterasyl" Ceramic Filters.

The “Super Sterasyl” filters used in both systems, reduce up to 99.99% of particulates, cysts, parasites and pathogenic bacteria including but not limited to E. Coli, Cryptosporidium, Giardia and Salmonella Typhi. Additionally, these filters will reduce chlorine, rust, sediment and organic chemicals. With nominal particulate filtration rating efficiencies of >99.99% filtration at 0.9 microns >99.9% at 0.5 microns >98% down to 0.2 microns (Spectrum Labs).

Construction: Constructed of high grade, polished stainless steel. Water Production: 1.25 gallons per hour Up to 30 Gallons per day! Measures: 19.4'' H X 8.5''dia. Capacity : 2.4 gal Weight: 8.5 lbs.