Big Blue Filter Kits
Now offering yearly filter replacement subscriptions!
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20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Bone Char
$329.003-stage replacement filter kit with sediment, activated alumina, and bone char for standard Big Blue carbon filter. Product Features 20" BB Sediment Filter The 5 micron sediment filter is a 100% polypropylene filter and contains graded density...RFK3-4520-SDAABC$329.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, Bone Char, and Activated Alumina
$329.00Replacement or upgrade for standard Big Blue systems Sediment filter Bone Char Carbon filter Activated Alumina filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Sediment filter removes a wide range of dirt and particulate,...RFK3-4520-SDBCAA$329.00 -
20-inch Big Blue 2 Stage Filter Kit - Sediment and Nitrate
$303.00Replacement or upgrade for standard Big Blue systems Sediment filter - 5-micron Nitrate filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. The initial sediment filter reduces sand, sediment, dirt, and other particulates. The...RFK2-4520-SDNT$303.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Activated Alumina and Bone Char
$309.00Replacement or upgrade for standard Big Blue systems Activated Alumina filter Bone Char Carbon filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Activated alumina is commonly used to reduce lead, arsenic, and fluoride. Bone...RFK2-4520-AABC$309.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" pH, KDF 55, and KDF 85
$309.00Replacement or upgrade for standard Big Blue systems pH filter KDF 55 filter KDF 85 filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. The pH filter is calcite based and neutralizes acid (ph <7) in the water. The KDF 55...RFK2-4520-PH5585$309.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Dual Bone Char
$329.00Replacement or upgrade for standard Big Blue systems Dual Bone Char Carbon filters Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Bone char carbon is typically used to reduce fluoride, arsenic, radioactive isotopes, iron, lead,...RFK2-4520-BCBC$329.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Carbon Block, and Nitrate Filters
$356.00Replacement or upgrade for standard Big Blue systems Sediment filter - 5-micron Carbon block filter Nitrate filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. The initial sediment filter reduces sand, sediment, dirt, and...RFK3-4520-SDCBNT$356.00