Big Blue Filter Kits
Now offering yearly filter replacement subscriptions!
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20-inch Sediment and Carbon Block 2 Stage Filter Kit
$89.00Replacement filter set for 2 stage Big Blue 20-inch filter system. Includes the carbon block filter and sediment filter. Filters need replaced at least once a year, every 6 months is average for...RFK2-4520-SDCB$89.00 -
10-inch (10"x4.5") Sediment and Carbon Block 2 Stage Filter Kit
$59.00Replacement filter set for 2 stage Big Blue 10" filter system. Includes the carbon block filter and sediment filter. Filters need replaced at least once a year, every 6 months is average for most...RFK2-4510-SDCB$59.00 -
20-inch High Flow 2 Stage Filter Kit with Sediment & GAC/KDF 55 Filters
$129.00Replacement filter set for the 2 stage Big Blue 20" filter system includes sediment filter and GAC/KDF 55 filter. The sediment filter removes removes sand, sediment, and particulates. The GAC/KDF 55...RFK2-4520-SD55$129.00 -
20-inch High Flow 2 Stage Filter Kit with Sediment Filter & Catalytic Carbon/KDF-85 Filter
$182.00The 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...RFK2-4520-SD85$182.00 -
20-inch High Flow 3 Stage Filter Kit with CatCarb/KDF 85, Activated Alumina, and Sediment Filters
$292.00Transform your water purification system with the 20-inch High Flow 3 Stage Filter Kit, a perfect blend of advanced filtration technology and reliable performance. Experience cleaner, safer water for...RFK3-4520-85AASD$292.00 -
20-inch High Flow 3 Stage Filter Kit with Sediment, GAC, and Carbon Block Filters
$166.00Experience cleaner, fresher water with the 20-inch High Flow 3 Stage Filter Kit. Designed for optimal performance, this replacement filter set ensures your 20" filter system delivers pristine...RFK3-4520-SDGCCB$166.00 -
20-inch 3 Stage Filter Kit with Sediment, Activated Alumina, and Radial Flow Carbon Filter
$235.00Transform your water filtration experience with the 20-inch 3 Stage Filter Kit, designed for both efficiency and effectiveness. This comprehensive kit features three high-performance filters that...RFK3-4520-SDAARF$235.00 -
20-inch High Flow 3 Stage Filter Kit with Sediment, Catalytic Carbon/KDF 85, and Radial Flow Carbon
$249.00Transform your water quality with the 20-inch 3 Stage Filter Kit, engineered for optimal filtration and taste enhancement. This comprehensive kit includes a sediment filter, Catalytic Carbon/KDF 85...RFK3-4520-SD85RF$249.00 -
20-inch High Flow 3 Stage Filter Kit with GAC/KDF 55, Activated Alumina, and Sediment Filters
$259.00Transform your water purification process with the 20-inch 3 Stage Filter Kit. Designed to deliver superior filtration, this kit includes GAC/KDF 55, Activated Alumina, and Sediment Filters, ensuring...RFK3-4520-SD55AA$259.00 -
20-inch High Flow 3 Stage Filter Kit with Sediment, GAC/KDF55, and Carbon Block Filters
$169.00Transform your water quality with the 20-inch 3 Stage Filter Kit, designed for superior filtration and cleaner, better-tasting water in your home. This comprehensive replacement filter set includes...RFK3-4520-SD55CB$169.00 -
3 Stage High Flow Filter Kit 4.5" x 20" Sediment, KDF85, Bone Char
$283.005-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...RFK3-4520-SD85BC$283.00 -
3 Stage High Flow 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" High Flow Sediment Filter The 5 microRFK3-4520-SDBCRF$249.00 -
20-inch High Flow 2 Stage Filter Kit with Activated Alumina & Carbon Block
$179.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and carbon block. The activated alumina filter removes removes fluoride, lead, and arsenic from...RFK2-4520-AACB$179.00 -
20-inch High Flow 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...RFK2-4520-BC55$249.00 -
20-inch High Flow 2 Stage Filter Kit with Activated Alumina & Sediment Filter
$159.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and carbon block. The activated alumina filter removes removes fluoride, lead, and arsenic from...RFK2-4520-AASD$159.00