8 big blue cto carbon block & pleated sediment 4.5" x 10" replacement filter cartridges

Big blue replacement filter cartridgesremoves chlorine, bad taste and odororganic solvents and organic chemicalsnominal 5 micron ratingresidential, food servicecommercial and industrial applicationsreverse osmosis pre filtrationwater filters and aquariumsfine chemicalsoil and gasfine chemicalsmetal finishingpulp and paper