POOLPURE 5CH-35 Spa Filter Cartridge 8in x 5.75in 50-Micron Trilobal Fabric — Durable Drop-In Replacement

The POOLPURE 5CH-35 spa filter cartridge is a heavy-duty replacement filter engineered to match and often exceed the performance of PMAX50P4, Unicel 5CH-35, and Filbur FC-0300 cartridges.

This compatible cartridge is built for pools and spas that need dependable fine-filtration, durable construction, and easier maintenance. With a trilobal filtration fabric, a 50-micron fine filtration layer, and reinforced end caps, the 5CH-35 is designed to trap more debris, rinse clean faster, and last longer than many standard cartridges. It fits a wide range of OEM cross-references so you can replace worn cartridges without re-plumbing or guesswork.

How does this filter improve water clarity for everyday spa use?

The 5CH-35 captures very fine particles thanks to an upgraded 50-micron layer combined with trilobal fibers that increase surface area for adsorption. That combination reduces suspended solids, resulting in clearer water and reduced load on chemical sanitizers. Regular rinsing clears trapped debris quickly so the filter stays effective between deeper cleanings.

• 50-micron high-efficiency filtration captures fine dust, hair, sand, and pollen
• Trilobal fabric provides three times the adsorption area of conventional materials
• Dirt-locking structure releases debris easily during rinse cycles
• Reduces frequency of chemical adjustments and water changes

Will this cartridge fit my spa pump and plumbing?

The POOLPURE 5CH-35 is sized to replace common OEM part numbers and cross-references, so installation is typically drop-in for compatible housings. Its top handle and 1 1/2" MPT bottom thread match many standard filter assemblies. Always compare physical dimensions and port types to your current cartridge before purchase to ensure a correct fit.

• Length: 8 inches, Outside diameter: 5 3/4 inches
• Bottom connection: 1 1/2" MPT, convenient top handle for removal
• Compatible with PMAX50P4, Unicel 5CH-35, Filbur FC-0300, and similar models
• Works with many OEM housings—confirm measurements for compatibility

How durable is the 5CH-35 and how does it affect replacement frequency?

POOLPURE engineered this cartridge using thickened polyester fabric, reinforced ABS end caps, and a strengthened core to extend service life. The robust materials resist collapse and material breakdown, so cartridges last longer under regular use. Fewer replacements lower long-term maintenance cost and reduce downtime for your pool or spa.

• 4 oz. thickened polyester fabric for improved wear resistance
• Reinforced ABS end caps and integrated core for structural strength
• Typical lifespan extends over 30% longer versus standard cartridges
• Reusable after thorough rinsing—cleaning is fast and effective

Is this product certified and trusted by professionals?

POOLPURE products are tested against NSF/ANSI 50 safety standards for material suitability in pool and spa applications. The brand partners with competitive swim programs and is PHTA-aligned, reflecting an emphasis on performance and reliability in demanding environments. These affiliations and certifications indicate attention to safety and consistent filtration results.

• IAPMO-tested to NSF/ANSI 50 for material safety in water contact
• Pool & Hot Tub Alliance (PHTA) membership confirms industry alignment
• Field-tested in athletic and media environments for real-world performance
• Trusted by millions of pool owners for routine filtration needs

Who is this for: The POOLPURE 5CH-35 is ideal for pool and spa owners who need a reliable, long-lasting replacement that matches common OEM references without the OEM price. It's a good choice for busy residential spas, light commercial settings, and pool enthusiasts who prefer lower maintenance intervals and clearer water. If you want a sturdier cartridge that rinses clean easily and fits PMAX50P4/Unicel/Filbur housings, this filter is a practical upgrade.