Pool Filter Cartridge Replacement FP-33131 - 4 Pack, 131 SQFT Each

In this review of the FP-33131 replacement pool cartridge, the bottom line is simple: it is designed for pool owners who need a reliable, washable replacement that fits Hayward CX1280XRE and similar housings without modification. The reviewer found the cartridge's precise fit, sizeable 524 sq ft total filtration in the 4-pack, and durable construction to be the single biggest reason to buy, because those traits translate to less frequent replacements and straightforward maintenance for seasonal cleaning routines.

Key Features

• Precise fit: The cartridge is engineered to fit Hayward CX1280XRE, C5020, C5025 and C5030 models, making installation quick and tool-free for compatible systems.
• Generous filtration area: Each cartridge supplies 131 sq ft of media, delivering a combined 524 sq ft in this 4-pack to help capture fine dirt and debris.
• Durable construction: Polyurethane endcaps and an injection-molded core keep the cartridge stable during repeated rinses and seasonal cleanings.
• Efficient media: Pleated polyester fabric traps fine particles while promoting improved flow, which can reduce pump strain and energy use.
• Easy maintenance: Cartridges are washable and can be rinsed or soaked when filter pressure rises 8 to 10 PSI, simplifying upkeep for backyard pools.

Who It's For

This cartridge set is best for owners of Hayward CX1280XRE and listed compatible models who want a direct-replacement cartridge that restores filtration performance without modifications. It also suits seasonal maintenance routines where washable media and robust endcaps matter to those who clean filters several times per season.

Those who should look elsewhere include owners of non-compatible filter housings or people seeking a disposable, low-cost short-term cartridge; this product is built for repeated cleaning and long-term performance rather than a minimal one-season throwaway option.

Pros & Cons

Pros

• Precise compatibility with multiple Hayward and OEM part numbers means straightforward replacement and installation.
• Large 131 sq ft per cartridge area improves dirt capture and can extend time between cleanings.
• Sturdy polyurethane endcaps and molded core resist deformation during rinsing and handling.
• Washable polyester pleats support efficient filtration and reduced pump pressure.

Cons

• Not suitable for filter models outside the listed Hayward and equivalent part numbers, so double-check fit before buying.
• As a washable cartridge, it requires periodic rinsing or soaking when pressure rises, which is more hands-on than some disposable media.

Specifications

Model	FP-33131 (4 pack)
Compatible models	Hayward CX1280XRE, C5020, C5025, C5030; Unicel C-7494; Filbur FC-1227/FC-6435; PLF131A; 732-166-04
Filtration area	131 sq ft per cartridge (524 sq ft total)
Dimensions	32-3/4 in length, 7 in OD, 3 in ID
Endcaps	Polyurethane
Core	Injection-molded core for stability
Media	Pleated polyester fabric, washable

Our Verdict

The FP-33131 4-pack is a practical, cost-effective choice for owners of the listed Hayward and equivalent filters who want a durable, washable cartridge that restores filtration area and flow. It represents good value for seasonal maintenance and for users who prefer fewer replacements and easy rinsing over single-use cartridges.

Frequently Asked Questions

Will this cartridge fit my Hayward CX1280XRE?
Yes, it is designed to fit Hayward CX1280XRE and the other listed models without additional modification.

How often should I clean these cartridges?
Clean when filter pressure rises about 8 to 10 PSI or at the start of each pool season for best performance.

Are the cartridges washable and reusable?
Yes, the pleated polyester media is washable and the polyurethane endcaps and molded core are built for repeated cleanings.