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Replacement Filters by Size

DiscountFilterStore offers a wide variety of filters in various sizes. Whether you need a large 20 x 4.5 inch filter for your whole home needs or a 10 x 2.5 inch filter for a point of use system like an countertop system or undersink system you will be sure to find the replacement filter in the size you need.

You can also shop for your whole house replacement filter by filter media from our Replacement Filters By Media page.

If you need help finding the filter right for your home, give our water experts a call at 1-800-277-3458 and we'll help find the perfect replacement filter for you.

253 Products found

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  1. 20 inch x 4.5 inch Comparable String Wound Sediment Water Filter by Tier1 (20 micron)

    20 inch x 4.5 inch Comparable String Wound Sediment Water Filter by Tier1 (20 micron)

    Price $29.99 List Price Price $42.99 Save 30%
  2. SPC-25-2020 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2020 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    Price $19.99 List Price Price $28.99 Save 31%
  3. P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Price $4.99 List Price Price $6.99 Save 28%
  4. CB-25-2005 Hydronix Polypropylene Replacement Water Filter

    CB-25-2005 Hydronix Polypropylene Replacement Water Filter

    Price $21.99 List Price Price $30.99 Save 29%
  5. P5 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    P5 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    Price $7.99 List Price Price $10.99 Save 27%
  6. DGD-2501 Pentek Comparable Whole House Sediment Water Filter by Tier1

    10 inch x 4.5 inch Whole House Sediment Water Filter by Tier1 (1 Micron)

    Price $16.99 List Price Price $23.99 Save 29%
  7. R30BB Pentek Comparable Whole House Water Filter by Tier1

    R30BB Pentek Comparable Whole House Water Filter by Tier1

    Price $19.99 List Price Price $28.99 Save 31%
  8. EP-10 Pentek Comparable Whole House Water Filter by Tier1

    EP-10 Pentek Comparable Whole House Water Filter by Tier1

    Price $11.99 List Price Price $16.99 Save 29%
  9. Iron and Manganese Reducing Tier1 Replacement Water Filter

    Iron and Manganese Reducing Replacement Water Filter by Tier1

    Price $48.99 List Price Price $69.99 Save 30%
    Free Shipping
  10. CW5-BBS Culligan 5 Micron Polypropylene Wound Replacement Filter

    CW5-BBS Culligan 5 Micron Polypropylene Wound Replacement Filter

    Price $26.99 List Price Price $38.99 Save 30%
  11. Iron and Lead Reducing Tier1 Whole House Replacement Water Filter

    Iron and Lead Reducing Replacement Water Filter by Tier1

    Price $63.99 List Price Price $90.99 Save 29%
    Free Shipping
  12. DGD-5005-20 155358 Pentek Spun Polypropylene Filter Cartridge Comparable Replacement Kit with O-ring and Lubricant by Tier1

    DGD-5005-20 Comparable 155358 Pentek Spun Polypropylene Filter Cartridge Replacement Kit with O-ring and Lubricant by Tier1

    Price $26.99 List Price Price $38.99 Save 30%

253 Products found

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Shopping Options
Category
  1. 10 x 2.5 Inch Replacement Filters 109 item
  2. 10 x 4.5 Inch Replacement Filters 51 item
  3. 20 x 2.5 Inch Replacement Filters 36 item
  4. 20 x 4.5 Inch Replacement Filters 58 item
Brand
  1. American Plumber 14 item
  2. Aqua-Pure 13 item
  3. Aries 2 item
  4. Crystal Quest 1 item
  5. Culligan 13 item
  6. Cuno 2 item
  7. Doulton 2 item
  8. Filtrete 2 item
  9. GE 6 item
  10. Harmsco 4 item
  11. Hydrologic 1 item
  12. Hydronix 38 item
  13. Hytrex 4 item
  14. KX Matrikx 6 item
  15. OmniFilter 8 item
  16. Omnipure 1 item
  17. Pentek 55 item
  18. Purtrex 6 item
  19. Tier1 67 item
  20. Viqua 2 item
  21. Watts 6 item
Primary Filter Media
  1. Activated Carbon Block 37 item
  2. Carbon Block 6 item
  3. Carbon Wrapped 8 item
  4. Ceramic with Carbon 1 item
  5. Granular Activated Carbon 33 item
  6. Hexametaphosphate Crystals 1 item
  7. Ion Exchange Resin 7 item
  8. Permanganate Treated Zeolite 1 item
  9. Phosphate Crystal 1 item
  10. Pleated Cellulose 7 item
  11. Pleated Polyester 25 item
  12. Polypropylene 95 item
  13. Sintered Ceramic 1 item
Price
  1. $0.00 - $99.99 244 item
  2. $100.00 and above 9 item
Fitting Type
  1. Push In 1 item
  2. Quick Connect 1 item
Fitting Size (inches)
  1. 1/4 inch 2 item
Advertised Size (in)
  1. 9-3/4 x 2-3/4 3 item
  2. 10 x 2-1/2 104 item
  3. 10 x 4-1/2 49 item
  4. 10 x 5 3 item
  5. 20 x 2-1/2 36 item
  6. 20 x 4-1/2 58 item
Micron Rating (Nominal)
  1. 0.5 27 item
  2. 1 32 item
  3. 5 78 item
  4. 10 25 item
  5. 20 31 item
  6. 25 19 item
  7. 30 17 item
  8. 40 1 item
  9. 50 13 item
  10. 75 1 item
  11. 100 3 item
Filter Life (months)
  1. 2 months 8 item
  2. 3 months 44 item
  3. 4 months 7 item
  4. 6 months 175 item
  5. 12 months 8 item
Filter Life (gallons)
  1. 100 - 250 1 item
  2. 250 - 500 3 item
  3. 500 - 1,000 14 item
  4. 1,000 - 2,500 11 item
  5. 2,500 - 5,000 9 item
  6. 5,000 - 10,000 23 item
  7. 10,000 - 25,000 41 item
  8. 25,000 - 50,000 15 item
  9. 50,000 and up 6 item