Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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Filbur Pool Filters

Filbur ® Compatible Pool Replacement Water Filters
  1. Harmsco ® H-8600-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8600-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8600-AM Antimicrobial Replacement Pool Water Filter Cartridge - Step up to Premium Antimicrobial Construction. Cross reference HA8OTC-3, Unicel #C-8600, Pleatco # PA 80 and Filbur # FC 1280. 17 1/2 inches height x 8 1/2 inches diameter. Learn More
    $139.99 Special Price $79.99 As low as $74.99
  2. Harmsco ® H-4326-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-4326-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-4326-AM Antimicrobial Replacement Pool Water Filter Cartridge - Step up to Premium Antimicrobial Construction. Cross reference RA25TC-3, Unicel C-4625 - C-4326, Pleatco PRB 25-IN, Filbur FC 4375 - FC 2375. 13 3/8 inches height x 4 15/16 inches diameter. Learn More
    $37.99 Special Price $26.99 As low as $23.99
  3. Harmsco ® H-4335 Replacement Water Filter Cartridge
    Harmsco ® H-4335 Replacement Water Filter Cartridge
    Harmsco ® H-4335 Replacement Water Filter Cartridge - Rainbow 35 sq.ft. Replaces RA35TC / C-4335 / PRB35-IN. 9 3/16" length X 5" diameter. Learn More
    $26.99
  4. Harmsco ® H-4950 Replacement Water Filter Cartridge
    Harmsco ® H-4950 Replacement Water Filter Cartridge
    Harmsco ® H-4950 Replacement Water Filter Cartridge - Unicel cross reference # C-4950. RA50TC-3 & PRB50-IN. Rainbow 50 sq.ft. 13 3/8 inches height x 4 15/16 inches diameter. Learn More
    $38.99 Special Price $26.99 As low as $23.99
  5. Harmsco ® H-7447 Replacement Water Filter Cartridge
    Harmsco ® H-7447 Replacement Water Filter Cartridge
    Harmsco ® H-7447 Replacement Water Filter Cartridge - Replaces CX470-RE, C-7447 & PA50-SV. Hayward 50 sq.ft., Sta-Rite PRC50. Learn More
  6. Harmsco ® H-7477 Replacement Water Filter Cartridge
    Harmsco ® H-7477 Replacement Water Filter Cartridge
    Harmsco ® H-7477 Replacement Water Filter Cartridge - Hayward 75 sq.ft. Sta-Rite PRC 75 compatible. Replaces CX570-RE / C-7477 / PA75-SV. Learn More
    $99.99 Special Price $58.99 As low as $54.99
  7. Harmsco ® H-7487 Replacement Water Filter Cartridge
    Harmsco ® H-7487 Replacement Water Filter Cartridge
    Harmsco ® H-7487 Replacement Water Filter Cartridge - Replaces CX870-RE, C-7487 & PA100-N. Hayward 100 sq.ft.. 25 1/2 height x 6 7/8 diameter. Learn More
    $119.99 Special Price $72.99 As low as $69.29
  8. Harmsco ® H-7626 Replacement Water Filter Cartridge
    Harmsco ® H-7626 Replacement Water Filter Cartridge
    Harmsco ® H-7626 Replacement Water Filter Cartridge - Replaces HA25TC-3, C-7626 & PA25. Hayward CX250-RE 25 sq.ft. Learn More
    $39.99 Special Price $27.99 As low as $24.99
  9. Harmsco ® H-7656 Replacement Water Filter Cartridge
    Harmsco ® H-7656 Replacement Water Filter Cartridge
    Harmsco ® H-7656 Replacement Water Filter Cartridge - Replaces HA50TC-3, C-7656 & PA50. Hayward CX500-RE, 50 sq.ft. 19 3/4 height X 6 4/8 diameter. Learn More
    $79.99 Special Price $46.99 As low as $43.99
  10. Harmsco ® H-8409-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8409-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8409-AM Antimicrobial Replacement Water Filter Cartridge - Step up to Premium Quality Of Antimicrobial Construction. Replaces HA90TC-3, C-8409 & PA90. Hayward CX900 RE. 90 sq.ft. 17 5/16" height X 8 7/8" diameter. Learn More
    $129.99 Special Price $84.99 As low as $79.99
  11. Harmsco ® H-8412-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8412-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-8412-AM Antimicrobial Replacement Water Filter Cartridge - Replaces HA120TC-3, C-8412 & PA120. Hayward 120 sq.ft. CX1200-RE. #0296 Step up to Premium Antimicrobial Construction. You deserve the best. Learn More
    $129.99 Special Price $99.99 As low as $93.99
  12. Harmsco ® H-8600 Replacement Water Filter Cartridge
    Harmsco ® H-8600 Replacement Water Filter Cartridge
    Harmsco ® H-8600 Replacement Water Filter Cartridge - Replaces HA80TC-3, C-8600 & PA80 and Hayward CX800-RE. 75 sq.ft. 17 1/2 height X 8 1/2 diameter. Learn More
    $99.99 Special Price $67.99 As low as $62.99
  13. Harmsco ® H-9415-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-9415-AM Antimicrobial Replacement Water Filter Cartridge
    Harmsco ® H-9415-AM Sure Safe Antimicrobial Replacement Water Filter Cartridge - Replaces APP150TC-4 & C-9415. Pentair American Products Clean & Clear Predator. 150 SQ.FT. 31 height X 10 diameter. Step up to Premium Antimicrobial Construction For Best Filtration. Learn More
    $149.99 Special Price $119.99 As low as $108.78
  14. Pool and Spa Bacteria Tests
    Pool and Spa Bacteria Tests
    2 Pool And Spa Bacteria Tests Per Package. Easy to use. Do it yourself. Results in 20 minutes. Test for harmful bacteria for safety. Learn More
    $22.99 Special Price $15.99 As low as $12.99
Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.