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  1. OFF
    Spa Filter Cartridge 817-4050

    Spa Filter Cartridge 817-4050

    Diameter: 4-15/16, Length: 13-1/2", 50 sqft

    Waterway
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    817-4050
  2. OFF
    ProLine Spa Filter Cartridge P4CH-65

    ProLine Spa Filter Cartridge P4CH-65

    Diameter: 4-5/8", Length: 19-5/8", 65 sq ft

    ProLine
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    P4CH-65
  3. OFF
    ProLine Spa Filter Cartridge P-4303

    ProLine Spa Filter Cartridge P-4303

    Diameter: 4-5/8", Length: 6-3/4", 25 sq ft

    ProLine
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    P-4303
  4. OFF
    4-15/16" 32 sqft Filter Cartridge PA-1432

    4-15/16" 32 sqft Filter Cartridge PA-1432

    Replaces ProLine P-4332

    ProAqua
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    PA-1432
  5. OFF
    4-15/16" 25 sqft Filter Cartridge PA-423

    4-15/16" 25 sqft Filter Cartridge PA-423

    Replaces ProLine P4CH-23

    ProAqua
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    PA-423
  6. OFF
    4-15/16" 25 Sqft Filter Cartridge PA-4926

    4-15/16" 25 Sqft Filter Cartridge PA-4926

    Replaces ProLine P4CH-926

    ProAqua
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    PA-4926
  7. OFF
    4-15/16" Diameter 35 Sqft Filter Cartridge PA-1517

    4-15/16" Diameter 35 Sqft Filter Cartridge PA-1517

    Replaces ProLine P-4401

    ProAqua
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    PA-1517
  8. OFF
    4-5/8" Diameter 20 Sqft Filter Cartridge PA-420

    4-5/8" Diameter 20 Sqft Filter Cartridge PA-420

    Replaces ProLine P4CH-20

    ProAqua
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    PA-420
  9. OFF
    ProLine Spa Filter Cartridge P-4402

    ProLine Spa Filter Cartridge P-4402

    Diameter: 4-5/8", Length: 9-3/4", 20 sq ft

    ProLine
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    P-4402
  10. OFF
    ProLine Spa Filter Cartridge P-6473-164

    ProLine Spa Filter Cartridge P-6473-164

    Inner Cartridge, 880, Micro-Clean Ultra, 2006+

    ProLine
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    P-6473-164
  11. OFF
    4-15/16" 50 Sqft Filter Cartridge PA-1450

    4-15/16" 50 Sqft Filter Cartridge PA-1450

    Replaces ProLine P-4950

    ProAqua
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    PA-1450
  12. OFF
    4-15/16" Diameter 75 Sqft Filter Cartridge PA-1475

    4-15/16" Diameter 75 Sqft Filter Cartridge PA-1475

    Replaces ProLine P-4975

    ProAqua
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    PA-1475
  13. OFF
    4-15/16" Diameter 25 Sqft Filter Cartridge PA-1421

    4-15/16" Diameter 25 Sqft Filter Cartridge PA-1421

    Replaces ProLine P-4321

    ProAqua
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    PA-1421
  14. OFF
    ProLine Spa Filter Cartridge P-4325

    ProLine Spa Filter Cartridge P-4325

    Diameter: 4-5/8", Length: 11-7/8", 25 sq ft

    ProLine
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    P-4325
  15. OFF
    ProLine Spa Filter Cartridge P-4316

    ProLine Spa Filter Cartridge P-4316

    Diameter: 4-15/16", Length: 5-1/2", 16 sq ft

    ProLine
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    P-4316
  16. OFF
    ProLine Spa Filter Cartridge P4CH-50

    ProLine Spa Filter Cartridge P4CH-50

    Diameter: 4-5/8", Length: 14-3/4", 50 sq ft

    ProLine
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    P4CH-50
  17. OFF
    ProLine Spa Filter Cartridge P-4970

    ProLine Spa Filter Cartridge P-4970

    Diameter: 4-15/16", Length: 23-5/8", 75 sq ft

    ProLine
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    P-4970
  18. OFF
    ProLine Spa Filter Cartridge P40059

    ProLine Spa Filter Cartridge P40059

    Diameter: 4", Length: 3.5", 5 sq ft

    ProLine
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    P40059
  19. OFF
    4-15/16" 50 sqft Filter Cartridge PA-1406

    4-15/16" 50 sqft Filter Cartridge PA-1406

    Replaces ProLine P-4405

    ProAqua
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    PA-1406
  20. OFF
    4-15/16" 25 sqft Filter Cartridge PA-1426

    4-15/16" 25 sqft Filter Cartridge PA-1426

    Replaces ProLine P-4326

    ProAqua
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    PA-1426
  21. OFF
    4-1/4" Diameter 10 Sqft Filter Cartridge PA-1410

    4-1/4" Diameter 10 Sqft Filter Cartridge PA-1410

    Replaces ProLine P-4310

    ProAqua
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    PA-1410
  22. OFF
    ProLine Spa Filter Cartridge P-4320

    ProLine Spa Filter Cartridge P-4320

    Diameter: 4-5/8", Length: 11-7/8", 20 sq ft

    ProLine
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    P-4320
  23. OFF
    ProLine Spa Filter Cartridge P-4312

    ProLine Spa Filter Cartridge P-4312

    Diameter: 4-5/8", Length: 11-7/8", 12 sq ft

    ProLine
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    P-4312
  24. OFF
    ProLine Spa Filter Cartridge P-4324

    ProLine Spa Filter Cartridge P-4324

    Diameter: 4-5/8", Length: 9-3/4", 25 sq ft

    ProLine
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    P-4324
  25. OFF
    ProLine Spa Filter Cartridge P42516

    ProLine Spa Filter Cartridge P42516

    Diameter: 4-3/4", Length: 8-1/8", 25 sq ft

    ProLine
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    P42516
  26. OFF
    ProLine Spa Filter Cartridge P-4995

    ProLine Spa Filter Cartridge P-4995

    Diameter: 4-15/16", Length: 23-5/8", 95 sq ft

    ProLine
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    P-4995
  27. OFF
    ProLine Spa Filter Cartridge PP-1271

    ProLine Spa Filter Cartridge PP-1271

    Diameter: 4-15/16", Length: 13-5/16"

    ProLine
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    PP-1271
  28. OFF
    4-15/16" 50 sqft Filter Cartridge PA-1405

    4-15/16" 50 sqft Filter Cartridge PA-1405

    Replaces ProLine P-4305

    ProAqua
    This product is out of stock
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    PA-1405
  29. OFF
    4-1/4" Diameter 5 Sqft Filter Cartridge PA-1407

    4-1/4" Diameter 5 Sqft Filter Cartridge PA-1407

    Replaces ProLine P-4607

    ProAqua
    This product is out of stock
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    PA-1407
  30. OFF
    4-5/8" 20 sqft Filter Cartridge PA-4925

    4-5/8" 20 sqft Filter Cartridge PA-4925

    Replaces ProLine P4CH-925A

    ProAqua
    This product is out of stock
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    PA-4925
  31. OFF
    4-5/8" Diameter 19 Sqft Filter Cartridge PA-421

    4-5/8" Diameter 19 Sqft Filter Cartridge PA-421

    Replaces ProLine P4CH-21

    ProAqua
    This product is out of stock
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    PA-421
  32. OFF
    4-15/16" 35 sqft Filter Cartridge PA-1435

    4-15/16" 35 sqft Filter Cartridge PA-1435

    Replaces ProLine P-4335

    ProAqua
    This product is out of stock
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    PA-1435
  33. OFF
    4-15/16" Filter Cartridge PA-4935

    4-15/16" Filter Cartridge PA-4935

    Replaces ProLine P4CH-935

    ProAqua
    This product is out of stock
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    PA-4935
  34. OFF
    4-15/16" 50 Sqft Filter Cartridge PA-4949

    4-15/16" 50 Sqft Filter Cartridge PA-4949

    Filter Cartridge, Diameter: 4-15/16", Length: 13-1/2", Top: Handle, Bottom: 1-1/2" Female SAE Thread, 50 sq ft

    ProAqua
    This product is out of stock
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    PA-4949
  35. OFF
    4-5/8" Diameter 25 Sqft Filter Cartridge PA-424

    4-5/8" Diameter 25 Sqft Filter Cartridge PA-424

    Replaces ProLine P4CH-24

    ProAqua
    This product is out of stock
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    PA-424
  36. OFF
    4-15/16" Diameter 37 Sqft Filter Cartridge PA-4372

    4-15/16" Diameter 37 Sqft Filter Cartridge PA-4372

    Replaces ProLine P40372

    ProAqua
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    PA-4372
  37. OFF
    4-5/8" Diameter 30 Sqft Filter Cartridge PA-430

    4-5/8" Diameter 30 Sqft Filter Cartridge PA-430

    Replaces ProLine P4CH-30

    ProAqua
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    PA-430
  38. OFF
    4-15/16" Diameter 25 Sqft Filter Cartridge PA-1408

    4-15/16" Diameter 25 Sqft Filter Cartridge PA-1408

    Replaces ProLine P-4308

    ProAqua
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    PA-1408
  39. OFF
    4-1/4" Diameter 2.5 Sqft Filter Cartridge PA-1413

    4-1/4" Diameter 2.5 Sqft Filter Cartridge PA-1413

    Replaces ProLine P-4313

    ProAqua
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    PA-1413
  40. OFF
    4-5/8" Diameter 20 Sqft Filter Cartridge PA-1420

    4-5/8" Diameter 20 Sqft Filter Cartridge PA-1420

    Replaces ProLine P-4620

    ProAqua
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    PA-1420
  41. OFF
    4-15/16" Diameter 45 Sqft Filter Cartridge PA-1411

    4-15/16" Diameter 45 Sqft Filter Cartridge PA-1411

    Replaces ProLine P-4311

    ProAqua
    This product is out of stock
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    PA-1411
  42. OFF
    4-3/4" Diameter 35 Sqft Filter Cartridge PA-4354

    4-3/4" Diameter 35 Sqft Filter Cartridge PA-4354

    Replaces ProLine P40354

    ProAqua
    This product is out of stock
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    PA-4354
  43. OFF
    4-15/16" Diameter 28 Sqft Filter Cartridge PA-1401

    4-15/16" Diameter 28 Sqft Filter Cartridge PA-1401

    Replaces ProLine P-4301

    ProAqua
    This product is out of stock
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    PA-1401

43 Items

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Spa Brands
  1. Advantage Manufacturing 1item
  2. Apollo Spas 2items
  3. Arctic Spas 1item
  4. Bullfrog Spas 2items
  5. Clearwater Spas 2items
  6. Dakota Spas 2items
  7. Dimension One 2items
  8. Discovery Spas 2items
  9. DreamMaker Spas 2items
  10. Dynasty Spas 2items
  11. Emerald Spas 2items
  12. Freeflow Spas 1item
  13. Gatsby Spas 4items
  14. Honey Tubs 1item
  15. Hydro Spas 2items
  16. Icon Spas 2items
  17. Intex Recreation 2items
  18. Jacuzzi 1item
  19. Keys Backyard 1item
  20. LA Spas 2items
  21. Maax Spas 1item
  22. Master Spas 3items
  23. Nemco 2items
  24. Onyx Water Products 1item
  25. Ospazia 1item
  26. PDC Spas 1item
  27. Saratoga Spas 3items
  28. Softsider Spas 1item
  29. Softub 1item
  30. Sonfarrel 1item
  31. Sonoma Spas 1item
  32. South Pacific 1item
  33. Spa Manufacturers 2items
  34. Splash Tub 1item
  35. Strong Industries 2items
  36. Sundance Spas 5items
  37. Sunrise Spas 4items
  38. Thermo Spas 4items
  39. US Tooling & Spa 1item
  40. Viking Spas 4items
  41. Vita Spas 6items
  42. Warm Springs Spa 1item
  43. White Springs Spas 1item
Part Manufacturers
  1. ProLine 15items
  2. Waterway 1item
  3. ProAqua 27items
Length
  1. 10" 1item
  2. 11-7/8" 6items
  3. 12-1/2" 1item
  4. 12-1/4" 1item
  5. 13-1/2" 3items
  6. 13-5/16" 4items
  7. 14-3/4" 1item
  8. 14-7/8" 2items
  9. 14-9/16" 1item
  10. 18-3/4" 1item
  11. 19-5/8" 1item
  12. 20-1/8" 1item
  13. 23-5/8" 2items
  14. 3-1/2" 1item
  15. 3-3/4" 1item
  16. 4" 1item
  17. 4-5/8" 1item
  18. 5-1/2" 1item
  19. 6-3/4" 2items
  20. 6-5/8" 2items
  21. 8" 3items
  22. 8-1/8" 1item
  23. 9-1/4" 2items
  24. 9-3/4" 3items
Top Style
  1. Closed 2items
  2. Closed w/Raised Ring 1item
  3. Handle 10items
  4. Injection Molded Cone Handle 7items
  5. Open 23items
Bottom Style
  1. Closed 1item
  2. Female SAE Thread 5items
  3. Male Pipe Thread (MPT) 8items
  4. Male SAE Thread 2items
  5. Open 25items
  6. Open w/Beveled Edge 1item
  7. Open w/Slots 1item
Diameter
  1. 4" 1item
  2. 4-1/4" 4items
  3. 4-15/16" 22items
  4. 4-3/4" 2items
  5. 4-5/8" 13items
  6. 5" 1item
Hole Size
  1. 1-1/2" Female SAE 3items
  2. 1-1/2" Male SAE 1item
  3. 1-1/2" MPT 7items
  4. 1-1/5" MPT 1item
  5. 1-15/16" 2items
  6. 1-7/8" w/ slots 1item
  7. 1-9/10" 3items
  8. 2" Female SAE 2items
  9. 2" SAE 1item
  10. 2-1/16" 3items
  11. 2-1/6" 2items
  12. 2-1/8" 15items
  13. 2-3/4" 1item
  14. Closed Bottom 1item

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