POOLPURE Spa Filter Cartridge Replacement C-5345 2-Pack — 50 sq.ft, 50-Micron Trilobal Fabric

POOLPURE C-5345 SPA Filter Replaces PLBS50 2PACK is a direct-fit, high-efficiency spa cartridge designed to restore clear, debris-free water in compatible hot tubs and spas.

If your spa or hot tub is running cloudy or the factory filter is tired, this two-pack replacement provides a straightforward way to renew water flow and capture fine particles. Engineered as a compatible replacement for a wide list of OEM part numbers, the C-5345 uses a multilayer trilobal fabric and reinforced end caps to deliver consistent filtration performance and longer service life than standard cartridges.

How does the C-5345 improve water clarity in my spa?

The cartridge uses a trilobal fiber structure and a 50-micron filtration layer to trap small particles that ordinary filters miss. That combination increases contaminant capture area and keeps water looking cleaner between maintenance cycles.

• 50 sq.ft effective filtration surface captures fine debris like hair and sand.
• 50-micron layer filters very small particles without restricting flow.
• Trilobal fibers provide greater surface area for improved dirt retention.

Will these filters fit my existing spa model?

This POOLPURE replacement is built to match the most common dimensions and openings used by the referenced OEMs so it installs like the original. Check the listed measurements and comparison part numbers to confirm compatibility before purchasing.

• Length: 10 1/8"; Outer diameter: 5 5/16"; top & bottom openings: 2 1/8".
• Compatible with PLBS50, PDC530-AFS, FC-2970 and many more model references.
• Sold as a convenient two-pack for simultaneous replacement of both filters.

How durable and easy to maintain are these cartridges?

POOLPURE designs this cartridge with thicker polyester fabric, reinforced ABS end caps, and a strengthened core to withstand repeated rinsing and handling. Dirt-locking technology releases trapped particles during rinsing, so maintenance is faster and more effective.

• 4 oz. thickened polyester fabric for extended lifespan and wear resistance.
• Reinforced end caps and integrated core reduce deformation under pressure.
• Dirt-locking structure simplifies rinsing and restores flow quickly.

Are these filters safe and certified for long-term use?

The materials used in this filter are tested to recognized industry standards for pool and spa components. Independent testing and industry affiliations give extra confidence in material safety and consistent performance.

• IAPMO testing to NSF/ANSI 50 for material safety in pool and spa components.
• Manufactured to meet OEM-equivalent specifications for fit and function.
• Produced by POOLPURE, a member of the Pool & Hot Tub Alliance for trusted practices.

Who is this for: Owners and service technicians who need a reliable, ready-to-install replacement cartridge that balances high-efficiency particle capture with durable construction. This two-pack is ideal for people maintaining residential spas, small commercial hot tubs, or anyone looking to reduce frequent cartridge changes while keeping water clearer and maintenance simpler.