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2.5" x 20" Filters (Commercial RO + Whole House)

Replacement Whole House and Commercial RO Water Filters.

2.5" x 20" Filters fit Slim Big Blue 20" Housing

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  1. 2.5" x 20" Carbon Block Filter: Replacement Slim Blue 20" Filter/Cartridge for Commercial Reverse Osmosis RO Water Filtration Systems
    2.5" x 20" Carbon Block Filter: Replacement Slim Blue 20" Filter/Cartridge for Commercial Reverse Osmosis RO Water Filtration Systems
    Special Price $25.99 Regular Price $29.99
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  2. 12 Pack: Polyester Pleated Sediment Water Filter 2.5" x 20" |10 Micron Filtration for Big Blue Whole House Filtration Systems
    12 Pack: Polyester Pleated Sediment Water Filter 2.5" x 20" |10 Micron Filtration for Big Blue Whole House Filtration Systems
    $124.99
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  3. 2 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    2 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    Special Price $30.99 Regular Price $39.99
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  4. 2.5" x 20" Standard Blue Refillable BIRM Filter - for Iron and Manganese Reduction | Whole House Water Filter
    2.5" x 20" Standard Blue Refillable BIRM Filter - for Iron and Manganese Reduction | Whole House Water Filter
    Special Price $42.99 Regular Price $54.99
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  5. 2.5" x 20" Standard Blue Refillable Whole House Water Filter Cartridge - Carbon (GAC)
    2.5" x 20" Standard Blue Refillable Whole House Water Filter Cartridge - Carbon (GAC)
    Special Price $24.99 Regular Price $29.99
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  6. 2.5" x 20" Standard Blue Refillable Whole House Water Filter Cartridge - Catalytic Carbon
    2.5" x 20" Standard Blue Refillable Whole House Water Filter Cartridge - Catalytic Carbon
    $39.99
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  7. 2.5" x 20" Standard Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon
    2.5" x 20" Standard Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon
    $52.00
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  8. 2.5" x 20" Standard Water Filter: BONE CHAR - for Fluoride Removal Refillable Cartridge
    2.5" x 20" Standard Water Filter: BONE CHAR - for Fluoride Removal Refillable Cartridge
    Special Price $51.99 Regular Price $59.99
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  9. 20" Standard Iron & LimeScale Reducing Water Filter Cartridge 2.5" x 20" | for Whole House Standard Housing Filtration Systems
    20" Standard Iron & LimeScale Reducing Water Filter Cartridge 2.5" x 20" | for Whole House Standard Housing Filtration Systems
    Special Price $62.99 Regular Price $69.99
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  10. 20" Standard LimeScale Reducing Water Filter Cartridge 2.5" x 20" - SLOW PHOS | for Whole House Standard Housing Filtration Systems
    20" Standard LimeScale Reducing Water Filter Cartridge 2.5" x 20" - SLOW PHOS | for Whole House Standard Housing Filtration Systems
    Special Price $134.99 Regular Price $149.99
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  11. 20" Standard Water Filter KDF 55/GAC: Removes Chlorine, Heavy Metal Cartridge 2.5" x 20"
    20" Standard Water Filter KDF 55/GAC: Removes Chlorine, Heavy Metal Cartridge 2.5" x 20"
    $45.00
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  12. 4 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    4 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    Special Price $49.99 Regular Price $59.99
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  13. 6 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    6 Pack: Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    Special Price $62.99 Regular Price $69.99
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  14. Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    Hydro-Logic Tall Boy Compatible Pleated Sediment Water Filter 2.5" x 20" | 10 Micron Nominal Filtration for Standard Slim Blue Filtration Systems
    Special Price $17.99 Regular Price $22.99
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  15. HydroLogic TALLBoy KDF85/Catalytic Carbon Compatible Filter HL 22065
    HydroLogic TALLBoy KDF85/Catalytic Carbon Compatible Filter HL 22065
    Special Price $64.99 Regular Price $71.99
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  16. KDF 85 + Catalytic Carbon Water Filter 2.5" x 20" Fits Slim Blue Standard 20" Housing | Commercial RO, Hydroponics
    KDF 85 + Catalytic Carbon Water Filter 2.5" x 20" Fits Slim Blue Standard 20" Housing | Commercial RO, Hydroponics
    Special Price $57.99 Regular Price $64.99
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  17. KDF 85 Filtration Media for Sulfur, Iron, Bacteria, Heavy Metals Removal - 2.5 Lb
    KDF 85 Filtration Media for Sulfur, Iron, Bacteria, Heavy Metals Removal - 2.5 Lb
    Special Price $46.99 Regular Price $54.99
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  18. PACK OF 12: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Sediment, Carbon Block, GAC Filter, Post Carbon Inline
    PACK OF 12: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Sediment, Carbon Block, GAC Filter, Post Carbon Inline
    Special Price $174.99 Regular Price $209.99
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  19. PACK OF 12: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Pleated Sediment, Carbon Block, GAC Filter, Post Carbon Inline
    PACK OF 12: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Pleated Sediment, Carbon Block, GAC Filter, Post Carbon Inline
    Special Price $182.99 Regular Price $214.99
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  20. PACK OF 4 Carbon Block Filters: Replacement Slim Blue 20" Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20"
    PACK OF 4 Carbon Block Filters: Replacement Slim Blue 20" Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20"
    Special Price $60.00 Regular Price $70.00
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  21. Pack of 4: Whole House/Commercial Reverse Osmosis GAC Granular Coconut Shell Carbon Water Filter Cartridges 2.5" x 20"
    Pack of 4: Whole House/Commercial Reverse Osmosis GAC Granular Coconut Shell Carbon Water Filter Cartridges 2.5" x 20"
    Special Price $69.99 Regular Price $74.99
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  22. PACK OF 9: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Pleated Sediment, Carbon Block, GAC Filter
    PACK OF 9: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Pleated Sediment, Carbon Block, GAC Filter
    Special Price $146.99 Regular Price $184.99
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  23. PACK OF 9: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Sediment, Carbon Block, GAC Filter
    PACK OF 9: Replacement Slim Blue 20" Pre-Filters/Cartridges for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20" Sediment, Carbon Block, GAC Filter
    Special Price $141.99 Regular Price $179.99
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  24. Refillable, Empty Water Filter Cartridge Universal (2.5" D x 20" H) - Compatible with Standard Slimline 20" Housing (White)
    Refillable, Empty Water Filter Cartridge Universal (2.5" D x 20" H) - Compatible with Standard Slimline 20" Housing (White)
    Special Price $19.99 Regular Price $25.00
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  25. Refillable, Empty Water Filter Cartridge Universal Slimline (2.5" D x 20" H) - for Standard 20" Housing (Clear)
    Refillable, Empty Water Filter Cartridge Universal Slimline (2.5" D x 20" H) - for Standard 20" Housing (Clear)
    Special Price $17.99 Regular Price $24.99
    Out of stock
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  26. Replacement Pre-Filters/Cartridges for The Shark Commercial Reverse Osmosis DI Water Filtration Systems
    Replacement Pre-Filters/Cartridges for The Shark Commercial Reverse Osmosis DI Water Filtration Systems
    Special Price $169.99 Regular Price $189.99
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  27. Replacement RODI Pre-Filters/Cartridges for Commercial Reverse Osmosis DI Water Filtration Systems - 2.5" x 20"
    Replacement RODI Pre-Filters/Cartridges for Commercial Reverse Osmosis DI Water Filtration Systems - 2.5" x 20"
    Special Price $88.99 Regular Price $109.99
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  28. Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" - KDF 55 (City Water)
    Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" - KDF 55 (City Water)
    Special Price $73.99 Regular Price $79.99
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  29. Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated
    Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated
    Special Price $55.00 Regular Price $65.00
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  30. Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated - KDF 55/85
    Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated - KDF 55/85
    Special Price $77.99 Regular Price $87.99
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  31. Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20"
    Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20"
    Special Price $53.00 Regular Price $63.00
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  32. Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" - KDF 85 (Well Water)
    Replacement Standard Blue Pre-Filters/Cartridges for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" - KDF 85 (Well Water)
    $75.00
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  33. Replacement Standard Slim Filters/Cartridges + Inline for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20"
    Replacement Standard Slim Filters/Cartridges + Inline for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20"
    Special Price $64.99 Regular Price $85.00
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  34. Replacement Standard Slim Filters/Cartridges + Inline for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated
    Replacement Standard Slim Filters/Cartridges + Inline for Commercial Reverse Osmosis Water Filtration Systems - 2.5"x20" Pleated
    Special Price $68.99 Regular Price $93.00
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  35. Sediment Filter - Replacement Slim Blue 20" Filter/Cartridge for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20"
    Sediment Filter - Replacement Slim Blue 20" Filter/Cartridge for Commercial Reverse Osmosis RO Water Filtration Systems | 2.5" x 20"
    Special Price $15.99 Regular Price $19.99 As low as $14.99
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  36. Slim Blue Cartridge 2.5" x 20" | Mixed Bed DI Resin - for Spot Free Car Rinse
    Slim Blue Cartridge 2.5" x 20" | Mixed Bed DI Resin - for Spot Free Car Rinse
    $69.99
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  37. Slim Blue Water Cartridge 2.5" x 20" | Cation Softening Resin 10% Cross Linked
    Slim Blue Water Cartridge 2.5" x 20" | Cation Softening Resin 10% Cross Linked
    $42.99
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  38. Standard Blue BIRM + KDF 85 Water Filter: Removes Iron/Sulfur/Rotten Egg Smell Cartridge 2.5" x 20"
    Standard Blue BIRM + KDF 85 Water Filter: Removes Iron/Sulfur/Rotten Egg Smell Cartridge 2.5" x 20"
    Special Price $56.99 Regular Price $64.99
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  39. Standard Blue KDF 85/GAC Water Filter: Removes Iron/Sulfur/Rotten Egg Smell Cartridge 2.5" x 20"
    Standard Blue KDF 85/GAC Water Filter: Removes Iron/Sulfur/Rotten Egg Smell Cartridge 2.5" x 20"
    Special Price $49.99 Regular Price $55.00
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  40. Wall Mounting Bracket for 3 Standard Slimline Filter Housings
    Wall Mounting Bracket for 3 Standard Slimline Filter Housings
    Special Price $29.99 Regular Price $35.99
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  41. Whole House Big Blue Replacement Water Filter: Strong Base Anion - Nitrate Reduction Cartridge (2.5" x 20")
    Whole House Big Blue Replacement Water Filter: Strong Base Anion - Nitrate Reduction Cartridge (2.5" x 20")
    Special Price $68.99 Regular Price $73.99
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