Replacement Filters
Now offering yearly filter replacement subscriptions!
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20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Radial Flow Carbon Filter
$235.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The activated alumina filter removes lower levels of both...RFK3-4520-SDAARF$235.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF 85, and Radial Flow Carbon
$245.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-SD85RF$245.00 -
20-inch Big Blue 3 Stage Filter Kit with GAC/KDF 55, Activated Alumina, and Sediment Filters
$259.00The 5 micron sediment filter is a 100% polypropylene filter contains graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 55 filter contains 4.0 lbs. of KDF-55 media, along...RFK3-4520-SD55AA$259.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, KDF85, Bone Char
$279.005-micron sediment filter Reduces dirt and particulates Catalytic carbon/KDF85 filter Reduces rotten egg odor, as well as a wide range of tastes, odors, and chemicals Bone char carbon filter Reduces arsenic, fluoride, and radioactive...RFK3-4520-SD85BC$279.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, Bone Char, Radial Flow Carbon
$249.00Replacement filter set for the 3 stage Big Blue 20" filter system includes sediment, bone char and radial flow carbon filters. Product Features 20" BB Sediment Filter The 5 micron sediment filter is a 100% polypropylene filter contains graded...RFK3-4520-SDBCRF$249.00 -
3 stage big blue filter kit 4.5" x 20" sediment, bone char, carbon block
$244.003 Stage Big Blue Replacement Filter Kit Sediment, carbon block, and bone char 5-micron sediment filter 5-micron carbon block filter Bone char filter Reduces sediment Reduces a wide range of tastes, odors, and chemicals Reduces fluoride, arsenic,...RFK3-4520-SDCBBC$244.00 -
20-inch Big Blue 2 Stage Filter Kit with Bone Char-GAC/KDF55
$249.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated bone char and GAC/KDF55 filters. The bone char filter reduces fluoride and arsenic in your water along with a wide range of radioactive particles, tastes, and odors...RFK2-4520-BC55$249.00 -
Big Blue 20-inch Filter for Arsenic
$229.00Arsenic Removal Filter Big Blue 4.5-inch x 20-inch style High arsenic removal capacity Minimal flow restriction Standard 4.5-inch x 20-inch filter size Big Blue filter with arsenic specific resin offers excellent removal of Arsenic with...AS-4520$229.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Carbon Block Filter
$219.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The activated alumina filter removes lower levels of both...RFK3-4520-SDAACB$219.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Bone Char and Radial Flow Carbon
$229.00Replacement or upgrade for standard Big Blue systems Bone Char Carbon filter Radial Flow Carbon filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Bone char carbon is typically used to reduce fluoride, arsenic, radioactive...RFK2-4520-BCRF$229.00 -
20-inch Big Blue 2 Stage Filter Kit with Activated Alumina & KDF 55
$219.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and radial flow carbon. The activated alumina filter reduces or removes fluoride and arsenic in your water without adding anything harmful. The radial...RFK2-4520-55AA$219.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Radial Flow Carbon and Scale Prevention
$229.00Replacement or upgrade for standard Big Blue systems Radial Flow Carbon filter Phosphate Scale Prevention filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters.The radial flow carbon offers 20-micron sediment filteration as well...RFK2-4520-RFPO$229.00 -
RFK3-4520-SDPH85
$249.00Replacement filter kit includes 4.5" x 20" sediment filter 4.5" x 20" ph filter 4.5" x 20" GAC/KDF85 filterRFK3-4520-PH85SD$249.00 -
20-inch Big Blue 2 Stage Filter Kit with Catalytic Carbon/KDF-85 and Radial Flow Carbon
$219.00Standard 4.5-inch x 20-inch filters Catalytic carbon/KDF 85 Radial Flow Carbon Reduces iron, hydrogen sulfide, heavy metals Reduces Chlorine, chemicals, tastes, and odors Radial flow filter to minimize flow restriction 6-12 month filter...RFK2-4520-85RF$219.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF 85, and Carbon Block
$235.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-SD85CB$235.00