• Sign In
  • Create an Account
Toggle Nav
My Cart
Search
Advanced Search
  • Compare Products
Menu
Account

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

Dont see a specific bundle or filter? Send us a message!

View as Grid List

41 Items

per page
Set Descending Direction
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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 $39.99 Regular Price $54.99
    Add to Wish List Add to Compare
  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 $25.99 Regular Price $29.99
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    $39.99
    Add to Wish List Add to Compare
  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 $56.99 Regular Price $62.99
    Add to Wish List Add to Compare
  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 $122.99 Regular Price $138.99
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  15. HydroLogic TALLBoy KDF85/Catalytic Carbon Compatible Filter
    HydroLogic TALLBoy KDF85/Catalytic Carbon Compatible Filter
    Special Price $64.99 Regular Price $71.99
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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 $45.00 Regular Price $60.00
    Add to Wish List Add to Compare
  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 $59.99 Regular Price $64.99
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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 $104.99 Regular Price $119.99
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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
    Add to Wish List Add to Compare
  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 $63.99 Regular Price $73.99
    Add to Wish List Add to Compare
View as Grid List

41 Items

per page
Set Descending Direction
Compare Products
  1. Remove This Item
Compare
Clear All
You have no items to compare.
My Wish List
Last Added Items
  1. Add to Cart
    Remove This Item
Go to Wish List
You have no items in your wish list.
Additional Options
All Rights Reserved 2020 -2021 Oceanic Water Systems