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  Our Catalog   Pools, Hot Tubs & Supplies   Filters & Filter Media

Filters & Filter Media - 108 - Extreame Savings! Save up to 46%


Extreame Savings! Up to 46% off on Filters & Filter Media at Knock Knock. Top brands include Guardian Filtration Products, Pleatco, & Skroutz. Hurry! Limited time offers. Offers valid only while supplies last.



2 pak-filter FITS- PLEATCO PDM18P-4, PDM25P4 DREAM MAKER GATSBY SPA unicel 4CH-21, HOT TUB CARTRIDGE,filbur FC-0121, FC-0136 ANTIMICROBIAL MICROBAN PROTECTION AGAINST BACTERIA GROWTH
2 pak-filter FITS- PLEATCO PDM18P-4, PDM25P4 DREAM MAKER GATSBY SPA unicel 4CH-21, HOT TUB CARTRIDGE,filbur FC-0121, FC-0136 ANTIMICROBIAL MICROBAN PROTECTION AGAINST BACTERIA GROWTH
In Stock
$69.99
$37.99
You Save: 46%

mpn: H08-158MB, ean: 0045635691988,

Guardian Filtration Products 4H8-158-02M • New in factory packaging • Replaces Pleatco PDM25P-4, PTL18P4-4 | Unicel 4CH-21 | Filbur FC-0136, FC-0121 • Diameter: 4-5/8',' Length: 8'', Top: Handle, Bottom: 1-1/2'' MPT Threaded • Filter Area: 20...


Pleatco PPM50SC-F2M Pacific Marquis Spas Hot Tub Spa Filter Cartridge (2 Pack)
Pleatco PPM50SC-F2M Pacific Marquis Spas Hot Tub Spa Filter Cartridge (2 Pack)
In Stock
$56.69

mpn: 91383, ean: 0842372153966,

If your old filter cartridge for your Pacific Marquis spa is ready to meet the trashcan, be sure to replace it with the Pleatco PPM50SC F2M Filter Cartridge. Reduced pore size distribution in the fabric provides the best flow you can get for your poo...


Outdoor Spa Pool Floats Filter Tank D.E. Filters Machined Metal Nut Water Swimming Pools Durable Garden Backyard FNS Quad - Skroutz
Outdoor Spa Pool Floats Filter Tank D.E. Filters Machined Metal Nut Water Swimming Pools Durable Garden Backyard FNS Quad - Skroutz
In Stock
$35.95

ean: 7426826498716,

This nut is designed to use with FNS pool and spa D.E. filters and also compatible with Quad pool and spa D.E. filters. New Replacement Machined Filter Nut Nut replacement, 1/4" Fits Pentair FNS pool and spa D.E. filters Also fits Quad pool and spa D...


Pleatco PWW150-4 Replacement Cartridge for Waterway Pool 150, Leisure Bay WW-150, 1 Cartridge
Pleatco PWW150-4 Replacement Cartridge for Waterway Pool 150, Leisure Bay WW-150, 1 Cartridge
In Stock
$86.03
$77.99
You Save: 9%

mpn: PWW150-4, ean: 0090164101064,

Not just a Filter Cartridge. Pleatco is a complete Filtration System! Pleatco Free Flow Cores, REEMAY Filtration Fabric, Antimicrobial Endcaps and Superbond Bands make the Pleatco product compass to differentiate the key components of why Pleatco Fil...


Guardian Antimicrobial Pool Spa Filter - Replaces Unicel 4CH-949 Filbur FC-0172 Pleatco PWW50L - Waterway Dynasty Rising Dragon
Guardian Antimicrobial Pool Spa Filter - Replaces Unicel 4CH-949 Filbur FC-0172 Pleatco PWW50L - Waterway Dynasty Rising Dragon
In Stock
$28.99
$27.99
You Save: 3%

mpn: 4H9-210M, ean: 0712038596669,

Guardian Filtration Products 4H9-210M, New in factory packaging Replaces: Pleatco PWW50L | Unicel 4CH-949 | Filbur FC-0172 Diameter: 5", Length: 13-1/16", Top: Handle, Bottom: 1-1/2" Female SAE Threaded  Filter Area: 50 sq. ft., Filter Material: R...


Guardian Spa Filter Replaces Pleatco PJ50-4, Unicel C-9650, Filbur FC-1460 Jacuzzi, Atlantic Pool Products, Cantar, Cft-50,Cfr-50
Guardian Spa Filter Replaces Pleatco PJ50-4, Unicel C-9650, Filbur FC-1460 Jacuzzi, Atlantic Pool Products, Cantar, Cft-50,Cfr-50
In Stock
$34.99

mpn: 910-194, ean: 0646437103466,

Guardian Filtration Products 910-194 New in factory packaging Replaces Pleatco: PJ50-4, Unicel: C-9650, Filbur: FC-1460 Dimensions: Diameter 10", Length 10", Top Open Hole 5 15/16", Bottom Open Hole 6" Filter Area: 50 sq. ft. Filter Material: Reema...


Guardian Pool Spa Filter Replaces Pleatco PCS75N, Unicel C-8475, Filbur FC-3320 COLEMAN, Maax Spas Filter
Guardian Pool Spa Filter Replaces Pleatco PCS75N, Unicel C-8475, Filbur FC-3320 COLEMAN, Maax Spas Filter
In Stock
$38.00
$37.00
You Save: 3%

mpn: 813-197, ean: 0646437103367,

Guardian Filtration Products 813-197 • New in factory packaging Replaces Pleatco: PCS75N | Unicel: C-8475 | Filbur: FC-3320 Length: 13", Diameter: 8", Top opening: 2-1/8", Bottom opening: 2" Filter Area: 75 sq ft • Filter Material: REEMAY(3 oz/ya...


Guardian Antimicrobial 2 Pack Pool Spa Filter Replaces Unicel 4CH-949 FC-0172 FC0172 PWW50L Rising Dragon Microban
Guardian Antimicrobial 2 Pack Pool Spa Filter Replaces Unicel 4CH-949 FC-0172 FC0172 PWW50L Rising Dragon Microban
In Stock
$54.99
$53.99
You Save: 2%

mpn: 4H9-210M, ean: 0712038596577,

2-pack filters by Guardian Filtration Products (4H9-210-02M) Antimicrobial/Microban material Replaces: Pleatco: PWW50L | Unicel: 4CH-949 | Filbur: FC-0172 Diameter: 5", Length: 13 1/16", Top: Handle, Bottom: 1 1/2" FEMALE SAE Threaded Filter Area...


Guardian Pool Spa Filter - Fits Pleatco PXST150 Unicel C-8316 Filbur FC-1286 - Hayward X-stream 150 CC1500
Guardian Pool Spa Filter - Fits Pleatco PXST150 Unicel C-8316 Filbur FC-1286 - Hayward X-stream 150 CC1500
In Stock
$54.00

mpn: 823-215, ean: 0712038596676,

Guardian Filtration Products 823-215  New in factory packaging Replaces Pleatco PXST150, Unicel C-8316, Filbur FC-1286 Diameter: 8 15/16" Length: 23 3/8" Top: Open Hole: 4" Bottom: Open Hole: 4" Filter Area: 150 sq ft Filter Material: High-qu...


Guardian Pool Spa Filter Replaceso Pwwtc75 C-8411 Filbur FC-1255, Hayward, Leisure Bay Waterway Clearwater II 75
Guardian Pool Spa Filter Replaceso Pwwtc75 C-8411 Filbur FC-1255, Hayward, Leisure Bay Waterway Clearwater II 75
In Stock
$42.00

mpn: 817-145, ean: 0646437102988,

Guardian Filtration Product 817-145s New in factory packaging Replaces Pleatco: PWWCT75 | Unicel: C-8411 | Filbur: FC-1255 Diameter: 8 15/16" Length: 17 3/8" Top: Open Hole 4" Bottom: Open Hole 4" Filter Area: 75 sq ft Filter Material: Reemay (4...


Pleatco PA131 131 Sq Ft Replacement Filter Cartridge for Hayward C5025 (4 Pack)
Pleatco PA131 131 Sq Ft Replacement Filter Cartridge for Hayward C5025 (4 Pack)
In Stock
$213.99

mpn: 90139, ean: 0842372151726,

If you're old filter cartridge for your Hayward SwimClear C5025 or C5030 filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PA131 Filter Cartridge.Reduced pore size distribution in the fabric provides the best flow yo...


Pleatco American Commander 75 Replacement Pool Filter Cartridge (2 Pack)
Pleatco American Commander 75 Replacement Pool Filter Cartridge (2 Pack)
In Stock
$109.99

mpn: 90505, ean: 0842372152778,

If your old filter cartridge for your American Commander 75 filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PCM75 Filter Cartridge.Reduced pore size distribution in the fabric provides the best flow you can get for...


Pleatco PA106 106 Sq Ft Hayward SwimClear C-4025 Pool Filter Cartridge (4 Pack)
Pleatco PA106 106 Sq Ft Hayward SwimClear C-4025 Pool Filter Cartridge (4 Pack)
In Stock
$176.99

mpn: 90142, ean: 0842372151757,

If your old filter cartridge for your Hayward SwimClear C-4025 filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PA106 Filter Cartridge.Reduced pore size distribution in the fabric provides the best flow you can get ...


4 Guardian Antimicrobial Pool Spa Filter Replaces UNICEL C-7494 Hayward Swimclear Cx1280re C5025 PA131, Filbur FC-1227 Microban
4 Guardian Antimicrobial Pool Spa Filter Replaces UNICEL C-7494 Hayward Swimclear Cx1280re C5025 PA131, Filbur FC-1227 Microban
In Stock
$204.99

mpn: 732-166-04M, ean: 0712038596553,

These filters feature Antimicrobial Filtration Fabric to help prevent bactria growth on the filter surface. Replaces: Pleatco: PA131 | Unicel: C-7494 | Filbur: FC-1227 • Diameter: 7", Length: 32 3/4", Top: Open Hole: 3", Bottom: Open Hole: 3" • F...


Pleatco PPM35SC-F2M Pool Filter Cartridge for Pacific Marquis Spas (6 Pack)
Pleatco PPM35SC-F2M Pool Filter Cartridge for Pacific Marquis Spas (6 Pack)
In Stock
$129.99

mpn: 6 x PPM35SC-F2M, ean: 0842372154444,

If your old filter cartridge for your Pacific Marquis Spas access skimmer is ready to meet the trashcan, be sure to replace it with the Pleatco PPM35SC-F2M Filter Cartridge.Reduced pore size distribution in the fabric provides the best flow you can g...


4 Pack Pool Spa Filters - Replace Pleatco PCC80 Unicel C-7470 FC-1976 - Pentair Pac Fab American Guardian Brand
4 Pack Pool Spa Filters - Replace Pleatco PCC80 Unicel C-7470 FC-1976 - Pentair Pac Fab American Guardian Brand
In Stock
$124.00

mpn: 719-168--04, ean: 0712038596713,

4-Pack Guardian Filtration Products 719-168-04 • New in factory packaging • Replaces Pleatco PCC80, Unicel C-7470, Filbur FC-1976 • Diameter: 7" • Length: 20-1/16" • Top: Open Hole 3" • Bottom: Open Hole 3" • Filter Area: 80 sq. ft. ...


Pleatco Pool & Spa Cartridge for American Commander Hayward Star Clear (2 Pack)
Pleatco Pool & Spa Cartridge for American Commander Hayward Star Clear (2 Pack)
In Stock
$104.99

mpn: 2 x PCM100SV, ean: 0842372152853,

If your old filter cartridge for your American Commander 100 or Hayward Star-Clear 100, filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PCM100SV Filter Cartridge.Reduced pore size distribution in the fabric provide...


Pleatco PJAN145 145 Sq Ft Replacement Pool Filter Cartridge for Jandy (4 Pack)
Pleatco PJAN145 145 Sq Ft Replacement Pool Filter Cartridge for Jandy (4 Pack)
In Stock
$239.99

mpn: 4 x PJAN145, ean: 0842372153676,

If your old filter cartridge for your Jandy CS 580 filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PJAN145 Filter Cartridge. Reduced pore size distribution in the fabric provides the best flow you can get for your ...


Pleatco PJANCS200 200 SqFt Jandy Industries CS200 Pool Filter Cartridge (2 Pack)
Pleatco PJANCS200 200 SqFt Jandy Industries CS200 Pool Filter Cartridge (2 Pack)
In Stock
$189.99

mpn: 2 x PJANCS200, ean: 0842372153478,

If your old filter cartridge for your Jandy Industries CS 200 filter system is ready to meet the trashcan, be sure to replace it with the Pleatco PJANCS200 Filter Cartridge. This package includes 2 filter cartridges. Reduced pore size distribution in...


Pleatco PWK65 Watkins Hot Spring Spas Replacement Spa Filter Cartridge (4 Pack)
Pleatco PWK65 Watkins Hot Spring Spas Replacement Spa Filter Cartridge (4 Pack)
In Stock
$129.99

mpn: 4 x PWK65, ean: 0842372153041,

If your old filter cartridge for your Watkins Hot Spring Spa is ready to meet the trashcan, be sure to replace it with the upgraded Pleatco PWK65 Filter Cartridge.Reduced pore size distribution in the fabric provides the best flow you can get for you...



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