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2 micron carbon block media that inhibits the growth of bacteria on the filter media
which is why they are referred to as 'Forever Chemicals'
Bottled water equivalent - 7
It can also be an upgrade from a 4 size cartridge
2FC Spec Sheet
Harmsco PolyPleat 20" Big Blue 1 Micron Cartridge PP-BB-20-1 (4 pack) Parts 2 micron carbon block mediaApplication: Harmsco Filter Cartridge for Safe, Cyst free Drinking Water Please note this item is sold in minimum quantities multiples of 4 Harmsco Poly Pleat cartridges were specifically designed for the economical removal of parasitic cysts, such as Cryptosporidium and Giardia (aka Beaver Fever). This cartridge fits a "Big Blue" 20 inch housing. POLY PLEAT cartridges are ideal as final filters for municipal water filtration without pre filtration.
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