POOLPURE 5CH-35 Spa Cartridge Filter 8" x 5-3/4" Replacement for PMAX50P4 – 50-Micron Trilobal Fabric, 35 sq.ft.

This cartridge is built to match common OEM parts such as PMAX50P4, Unicel 5CH-35, and Filbur FC-0300, while offering upgraded fabric and dirt-locking technology to keep your spa or small pool cleaner for longer. With a compact 8" length and robust construction, it balances fine filtration with long service life, making it a straightforward swap for many systems.

How does this filter improve water clarity compared to older cartridges?

The POOLPURE 5CH-35 uses trilobal filtration fabric and a 50-micron fine layer to capture much smaller particles than standard cartridges. Its dirt-locking structure holds debris until rinsed away, reducing cloudiness between cleanings.

• 50-micron filtration removes fine dust, hair, sand, and pollen.
• Trilobal fibers increase adsorption area for better dirt capture.
• Dirt-locking design releases trapped debris quickly during rinsing.
• Larger filtration area (35 sq.ft.) for longer run times between cleanings.

Will this cartridge fit my existing spa or pool system?

POOLPURE 5CH-35 is sized and threaded to replace many common OEM cartridges, but always check physical dimensions and connections before ordering. The filter measures 8" long with a 5 3/4" outside diameter and a 1 1/2" MPT bottom connection.

• Length: 8" — compatible with PMAX50P4 and Unicel 5CH-35 replacements.
• Outside diameter: 5 3/4" for standard housings.
• Bottom thread: 1 1/2" MPT to match common fittings.
• Top handle for easy removal and inspection.

How long does a POOLPURE filter last and how do I maintain it?

Durable materials and reinforced end caps extend usable life beyond many standard cartridges; typical lifespan depends on usage, water chemistry, and maintenance frequency. Rinse regularly, deep-clean occasionally, and replace when the fabric shows wear or permanently reduced flow.

• Construction: 4 oz. thickened polyester fabric and reinforced ABS end caps.
• Maintenance: Rinse debris with a hose; use a filter cleaner periodically.
• Longevity: Built to last about 30% longer than basic cartridges under similar conditions.
• Replacement: Swap when cleaning no longer restores flow or clarity.

Is the POOLPURE 5CH-35 safe and environmentally considered?

Yes — this cartridge is tested to NSF/ANSI 50 standards for material safety to ensure components don’t leach harmful substances into pool or spa water. Its reusable design and improved dirt release reduce water waste and cartridge consumption over time.

• NSF/ANSI 50 tested for material safety and long-term water exposure.
• Reusable after rinsing and periodic deep cleans to reduce replacements.
• Patented dirt-locking reduces time and water spent on maintenance.
• Designed to lower long-term chemical and replacement costs.

Who is this for: The POOLPURE 5CH-35 is aimed at hot tub and small-pool owners who need a reliable OEM-compatible replacement with better fine-particle capture and longer service life. It’s a good choice if you want easier cleaning, NSF-tested materials, and a cartridge that fits popular models like PMAX50P4, Unicel 5CH-35, and Filbur FC-0300.

Note: This product is a compatible replacement part. POOLPURE operates as an independent brand and references original manufacturer part numbers for fitment guidance only.