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4.5" x 20" Big Blue Filters

Replacement Big Blue Whole House Water Filters

4.5" x 20" Filters fit Standard 20" Big Blue Housing

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  1. 2 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    2 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    $32.00
    Out of stock
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  2. 20" Big Blue LimeScale Reducing Water Filter Cartridge 4.5" x 20" - SLOW PHOS | for Whole House Big Blue Housing Filtration Systems
    20" Big Blue LimeScale Reducing Water Filter Cartridge 4.5" x 20" - SLOW PHOS | for Whole House Big Blue Housing Filtration Systems
    Special Price $188.99 Regular Price $209.99
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  3. 4 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    4 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    $60.00
    Out of stock
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  4. 4.5" x 20" Big Blue Refillable Birm Filter - for Iron and Manganese Reduction | Whole House Water Filter
    4.5" x 20" Big Blue Refillable Birm Filter - for Iron and Manganese Reduction | Whole House Water Filter
    Special Price $84.99 Regular Price $92.99
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  5. 4.5" x 20" Big Blue Refillable Filter Cartridge - Catalytic Carbon/KDF 55 - Chloramine Removal
    4.5" x 20" Big Blue Refillable Filter Cartridge - Catalytic Carbon/KDF 55 - Chloramine Removal
    Special Price $84.99 Regular Price $99.99
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  6. 4.5" x 20" Big Blue Refillable Filter Cartridge - GAC Coconut Shell Carbon + KDF 55 - Chlorine Removal
    4.5" x 20" Big Blue Refillable Filter Cartridge - GAC Coconut Shell Carbon + KDF 55 - Chlorine Removal
    Special Price $69.99 Regular Price $79.99
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  7. 4.5" x 20" Big Blue Refillable Water Filter Cartridge - GAC Coconut Shell Carbon + KDF 85: Removes Iron, Sulfur/Rotten Egg Smell
    4.5" x 20" Big Blue Refillable Water Filter Cartridge - GAC Coconut Shell Carbon + KDF 85: Removes Iron, Sulfur/Rotten Egg Smell
    $72.00
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  8. 4.5" x 20" Big Blue Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon
    4.5" x 20" Big Blue Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon
    Special Price $98.99 Regular Price $107.99
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  9. 4.5" x 20" Whole House Big Blue Refillable Water Filter Cartridge - Catalytic Carbon
    4.5" x 20" Whole House Big Blue Refillable Water Filter Cartridge - Catalytic Carbon
    $74.99
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  10. 4.5" x 20" Whole House Big Blue Refillable Water Filter Cartridge - GAC Catalytic Carbon/Birm + KDF 85: Removes Iron, Manganese, Hydrogen Sulfide - Rotten Egg Smell
    4.5" x 20" Whole House Big Blue Refillable Water Filter Cartridge - GAC Catalytic Carbon/Birm + KDF 85: Removes Iron, Manganese, Hydrogen Sulfide - Rotten Egg Smell
    Special Price $89.99 Regular Price $99.99
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  11. 6 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    6 Pack: Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" |10 Micron Nominal Filtration
    $84.99
    Out of stock
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  12. Anti- Scale Water Filter Cartridge for Big Blue Whole House Systems | 4.5" x 20" | TAC Technology
    Anti- Scale Water Filter Cartridge for Big Blue Whole House Systems | 4.5" x 20" | TAC Technology
    $194.99
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  13. Big Big Whole House Filter Cartridges 4.5" x 20" (2) Sediment, GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (2) Sediment, GAC
    Special Price $54.99 Regular Price $69.99
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  14. Big Big Whole House Filter Cartridges 4.5" x 20" (3) Pleated Sediment, Carbon Block, KDF 55 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (3) Pleated Sediment, Carbon Block, KDF 55 / GAC
    Special Price $124.99 Regular Price $130.00
    Out of stock
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  15. Big Big Whole House Filter Cartridges 4.5" x 20" (3) Pleated Sediment, Carbon Block, KDF 85 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (3) Pleated Sediment, Carbon Block, KDF 85 / GAC
    Special Price $124.99 Regular Price $129.99
    Out of stock
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  16. Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, GAC
    Special Price $99.99 Regular Price $109.99
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  17. Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, KDF 55 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, KDF 55 / GAC
    Special Price $119.99 Regular Price $129.99
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  18. Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, KDF 85 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20" (3) Sediment, Carbon Block, KDF 85 / GAC
    Special Price $119.99 Regular Price $129.99
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  19. Big Big Whole House Filter Cartridges 4.5" x 20": (2) Sediment, Carbon Block, KDF 55 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20": (2) Sediment, Carbon Block, KDF 55 / GAC
    Special Price $135.00 Regular Price $145.00
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  20. Big Big Whole House Filter Cartridges 4.5" x 20": (2) Sediment, Carbon Block, KDF 85 / GAC
    Big Big Whole House Filter Cartridges 4.5" x 20": (2) Sediment, Carbon Block, KDF 85 / GAC
    Special Price $135.00 Regular Price $145.00
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  21. Big Big Whole House Filter Cartridges 4.5" x 20": 2 Sediment, Carbon Block, GAC
    Big Big Whole House Filter Cartridges 4.5" x 20": 2 Sediment, Carbon Block, GAC
    Special Price $118.99 Regular Price $130.00
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  22. Big Blue Cartridge 4.5" x 20" Birm + KDF 85: Removes Iron/Manganese/Sulfur/Rotten Egg Smell
    Big Blue Cartridge 4.5" x 20" Birm + KDF 85: Removes Iron/Manganese/Sulfur/Rotten Egg Smell
    Special Price $79.99 Regular Price $99.99
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  23. Big Blue Cartridge 4.5" x 20" | Cation Softening Resin 10% Cross Linked
    Big Blue Cartridge 4.5" x 20" | Cation Softening Resin 10% Cross Linked
    Special Price $57.99 Regular Price $67.99
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  24. Big Blue Cartridge 4.5" x 20" | Granular Activated Coconut Shell Carbon (GAC)
    Big Blue Cartridge 4.5" x 20" | Granular Activated Coconut Shell Carbon (GAC)
    Special Price $42.00 Regular Price $50.00
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  25. Big Blue Cartridge 4.5" x 20" | Mixed Bed DI Resin - for Spot Free Car Rinse
    Big Blue Cartridge 4.5" x 20" | Mixed Bed DI Resin - for Spot Free Car Rinse
    $89.99
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  26. Big Blue Empty Refillable Cartridge 4.5" x 20" For 20" Housing
    Big Blue Empty Refillable Cartridge 4.5" x 20" For 20" Housing
    Special Price $24.99 Regular Price $29.99
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  27. Big Blue Filter: Bone Char for Fluoride Removal Refillable Cartridge | 4.5"x20"
    Big Blue Filter: Bone Char for Fluoride Removal Refillable Cartridge | 4.5"x20"
    Special Price $68.99 Regular Price $98.99
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  28. Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" | 10 Micron Nominal Filtration
    Big Blue Polyester Pleated Sediment Water Filter 4.5" x 20" | 10 Micron Nominal Filtration
    $18.99
    Out of stock
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  29. Big Blue Water Filter Cartridge: CARBON BLOCK 4.5" X 20"
    Big Blue Water Filter Cartridge: CARBON BLOCK 4.5" X 20"
    Special Price $37.99 Regular Price $44.99
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  30. Big Blue Water Filters: Sediment + Carbon Block 4.5" x 20"
    Big Blue Water Filters: Sediment + Carbon Block 4.5" x 20"
    Special Price $48.00 Regular Price $55.00
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  31. Big Blue Whole House Sediment Water Filter 4.5" x 20" | 5 Micron
    Big Blue Whole House Sediment Water Filter 4.5" x 20" | 5 Micron
    $19.49
    Out of stock
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  32. Granular Activated Coconut Shell Carbon Media (GAC) - 5 LBS | 12x40 Mesh
    Granular Activated Coconut Shell Carbon Media (GAC) - 5 LBS | 12x40 Mesh
    Special Price $28.99 Regular Price $32.99
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  33. Hydro-Logic 22070 BigBOY - 4.5" x 20" Big Blue Refillable Water Filter Cartridge - Catalytic Coconut Shell Carbon + KDF 85: Removes Iron, Sulfur/Rotten Egg Smell
    Hydro-Logic 22070 BigBOY - 4.5" x 20" Big Blue Refillable Water Filter Cartridge - Catalytic Coconut Shell Carbon + KDF 85: Removes Iron, Sulfur/Rotten Egg Smell
    Special Price $94.99 Regular Price $104.99
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  34. Hydro-Logic HLBBPSF 22010 Compatible Sediment Filter, 4.5-Inch x 20-Inch
    Hydro-Logic HLBBPSF 22010 Compatible Sediment Filter, 4.5-Inch x 20-Inch
    Special Price $37.99 Regular Price $42.99
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  35. KDF 85 Filtration Media for Sulfur, Iron, Bacteria, Heavy Metals Removal - 5 Lb
    KDF 85 Filtration Media for Sulfur, Iron, Bacteria, Heavy Metals Removal - 5 Lb
    Special Price $69.99 Regular Price $79.99
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  36. Lime/Scale Reducing Carbon Water Filter Cartridge for BIg Blue Systems 4.5 x 20"
    Lime/Scale Reducing Carbon Water Filter Cartridge for BIg Blue Systems 4.5 x 20"
    $124.99
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  37. Single Housing Bracket for Whole House Big Blue 10-inch and 20-inch Filter Housings
    Single Housing Bracket for Whole House Big Blue 10-inch and 20-inch Filter Housings
    $13.99 As low as $7.49
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  38. Standard Replacement Big Blue Filters/Cartridges for Whole House Water Filtration Systems - 4.5" x 20"
    Standard Replacement Big Blue Filters/Cartridges for Whole House Water Filtration Systems - 4.5" x 20"
    Special Price $99.99 Regular Price $109.99
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  39. String Wound Poloypropylene Sediment Water Filter (4.5" x 20")
    String Wound Poloypropylene Sediment Water Filter (4.5" x 20")
    $25.00
    Out of stock
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  40. Triple Canister Bracket for 3 Stage Big Blue Systems
    Triple Canister Bracket for 3 Stage Big Blue Systems
    Special Price $48.99 Regular Price $54.99
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  41. Whole House Big Blue Replacement Water Filter: Strong Base Anion - Nitrate Reduction Cartridge (4.5" x 20")
    Whole House Big Blue Replacement Water Filter: Strong Base Anion - Nitrate Reduction Cartridge (4.5" x 20")
    Special Price $132.99 Regular Price $142.99
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