Best Inground Pool Filter Cartridges for Common Pool Systems
The best inground pool filter cartridge is the one that matches your filter’s model number and cartridge dimensions. For Pentair Clean & Clear Plus 420 systems, Cryspool, Fil-fresh, and Future Way offer four-cartridge replacement sets. Fil-fresh’s C1200 cartridge is designed for a Hayward Star-Clear Plus C1200, while Future Way’s C4030 set fits specified Hayward SwimClear models. Check your existing cartridge and filter manual before choosing.
| Product | Best For | Key Fit |
|---|---|---|
| Cryspool 07077 | CCP420 replacement set | Four 105-square-foot cartridges |
| Fil-fresh CCP420 | CCP420 owners seeking a stated-size match | 7-inch diameter, 26-inch height |
| Future Way CCP420 | CCP420 owners prioritizing easy rinsing | Trilobal pleated design |
| Fil-fresh C1200 | Hayward C1200 filter owners | 120-square-foot cartridge |
| Future Way C4030 | Hayward SwimClear C4030, C4025, or C4020 owners | Four-cartridge set |
Cryspool 07077 CCP420 Cartridge Set
Best for: Owners of a Pentair Clean and Clear Plus 420 or another listed compatible model who need a complete four-cartridge set. Each cartridge has a stated filtration area of 105 square feet, for 420 square feet across the set.
The listed dimensions are 26-1/16 inches long, 7 inches in outside diameter, and 3 inches at both openings. Cryspool says the cartridges use trilobal fibers intended to capture debris and support thorough water filtration. The listing names replacement references including CCP420, R173576, C-7471, and PCC105-PAK4.
Why it was selected: The listing provides detailed dimensions, filtration area, and a broad compatibility reference list, making it easier to compare against an existing cartridge. Check first: The manufacturer notes that other manufacturers’ names and part numbers are used for reference; confirm your exact model and measurements.
Fil-fresh CCP420 Replacement Cartridges
Best for: CCP420 owners looking for a four-pack with clearly stated cartridge dimensions. The listing identifies a 7-inch outside diameter, 3-inch inside diameter, and 26-inch height, and names Pentair Clean and Clear Plus 420 as a compatible filter.
The cartridges are described as heavy-duty paper with increased pleats to help capture debris. Listed replacement references include Pentair R173576, Unicel C-7471, Filbur FC-1977, and Pleatco PCC105-PAK4. The set is specified as four cartridges, each with 105 square feet of filtration area.
Why it was selected: Its stated size and replacement references support a straightforward comparison with an existing CCP420 cartridge. Check first: Compatibility references do not replace checking the filter’s model and dimensions; the manufacturer names are used for reference purposes.
Future Way CCP420 Cartridge Set
Best for: CCP420 owners who value the listed trilobal pleated construction and a design the seller describes as easier to rinse. This is a four-pack for a 420-square-foot filter system, with listed dimensions of 26 inches long and 7 inches in outside diameter.
Future Way lists compatibility with Pentair Clean and Clear Plus 420 and replacement references such as R173576, PCC105-PAK4, C-7471, and FC-1977. The product information also states NSF/ANSI 50 certification and describes the pleated design as capturing debris such as leaves, hair, sand, and oils.
Why it was selected: It combines a broad reference list with specific dimensions and a stated maintenance feature. Check first: The top and bottom openings are listed as 3 inches, so compare these measurements with your current cartridge before ordering.
Fil-fresh Hayward C1200 Cartridge
Best for: Owners of a Hayward Star-Clear Plus C1200 filter who need a single 120-square-foot cartridge rather than a four-cartridge CCP420 set. Listed dimensions are 8-15/16 inches in outside diameter, 4 inches in inside diameter, and 23-1/4 inches high.
The listing names Hayward CX1200RE, Unicel C-8412, and Filbur FC-1293 among its replacement references. It describes the media as ultra-fine, heavy-duty paper with increased pleats to capture debris.
Why it was selected: It offers a distinct option for a common Hayward model, showing why filter model matters more than choosing by the general phrase “inground pool cartridge.” Check first: This cartridge is not listed as a CCP420 replacement; verify the C1200 model and measurements.
Future Way Hayward C4030 Cartridge Set
Best for: Owners of Hayward SwimClear C4030, C4025, or C4020 systems seeking a four-cartridge replacement set. The product is also listed with references including Hayward CX880XRE, Pleatco PA106, and Unicel C-7488.
Each cartridge is listed with a 7-inch outside diameter, 3-inch inside diameter, and 25-1/2-inch height. Future Way describes its trilobal pleated design as capturing debris including leaves, hair, sand, and oils. The listing states NSF/ANSI 50 certification.
Why it was selected: It provides a model-specific Hayward alternative alongside the CCP420 and C1200 options. Check first: It is listed for C4030, C4025, and C4020 filters, not as a universal cartridge; compare the dimensions and replacement number before buying.
Buying Guide: How To Choose An Inground Pool Cartridge
Which filter model should the cartridge fit?
Start with the model number printed on the filter tank, manual, or existing cartridge. A cartridge for a Pentair CCP420 is not interchangeable with a Hayward C1200 or C4030 just because all are used in inground pools. Match the exact model or a listed replacement part number, then verify physical dimensions.
How should you compare cartridge dimensions?
Check cartridge length, outside diameter, inside diameter, and the size of both end openings. A small mismatch can prevent proper seating. Compare the listing with the old cartridge or the manufacturer’s documentation, and do not rely on a similar appearance alone.
Do you need one cartridge or a set?
Some large filter systems use multiple cartridges. The CCP420 listings above are four-packs with 105 square feet per cartridge, while the C1200 product is a single 120-square-foot cartridge. Confirm the number required by your filter before choosing a package.
What media and maintenance details matter?
Listings may describe pleat count, paper media, or trilobal fabric. These details can help compare construction, but they do not establish that a cartridge fits your system. Follow the filter maker’s cleaning instructions, and inspect cartridges for wear or damage during maintenance.
Frequently Asked Questions
Are pool filter cartridges universal?
No. Cartridge dimensions and end fittings vary by filter model. Match the model or replacement number and check the measurements before purchase.
How do I find my cartridge replacement number?
Look for a part number on the cartridge label or consult the pool filter’s manual. Compare that number with the replacement references in the product listing.
Can I use a CCP420 cartridge in a Hayward C1200?
These listings identify different dimensions and filter models. Do not treat them as interchangeable; use a cartridge specifically listed for your filter.
Does a larger filtration-area number guarantee a fit?
No. Filtration area alone does not confirm compatibility. The model, cartridge count, length, diameter, and openings must also match.