FIELD: water filtration. SUBSTANCE: cartridge contains frame with rods or strings covered with, applied by pneumatic extrusion technique, polymer fibrous material with porosity at least 35-40% and fiber thickness ranged from 5-10 to 400-500 mcm. Frame comprises various-shape cavities not closed from the frame end sides. EFFECT: improved structure. 2 dwg, 1 tbl
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