Grefilt CCP520 Pool Filter Cartridges 4-Pack, 520 sq.ft — 30‑Micron Trilobal, NSF/ANSI 50 Certified

Grefilt 4-Pack CCP520 replacement cartridges are heavy-duty 520 sq.ft pool filters built with 30-micron trilobal fabric and NSF/ANSI 50 certified materials for cleaner, longer-lasting pool filtration.

Keep your pool water clearer and your filter maintenance less frequent with a full set of four compatible CCP520-style cartridges. These Grefilt cartridges are engineered to match the Pentair Clean & Clear Plus 520 profile and many equivalent models, delivering a large filtration area, thicker fabric, and reinforced end caps so your system operates efficiently without frequent service interruptions.

How do these cartridges improve water clarity?

The Grefilt CCP520 cartridges use a 30-micron-rated trilobal fiber fabric that captures fine particles while keeping good flow through the filter. The trilobal shape increases surface area and particle capture compared with standard fibers, reducing suspended debris and haze.

• 30-micron precision captures small particulates without choking flow
• 520 sq.ft filtration area for increased dirt-holding capacity
• Trilobal fiber structure increases capture points by ~40%

Will these fit my existing 520-style system?

These cartridges match common CCP520 dimensions, so they fit many systems that accept Pentair Clean & Clear Plus 520-style replacements. Before ordering, measure your cartridge to confirm compatibility with the listed dimensions.

• Length: 32 1/6" (approx.) and outside diameter: 7"
• Top & bottom opening diameter: 3" to match CCP520 housings
• Compatible with models referencing Pentair R173578, Pleatco PCC130, and similar

How durable are these cartridges and how often will I need to replace them?

Grefilt designed these cartridges with thicker 5oz fabric, reinforced ABS end caps, and a sturdy internal support core to resist pressure and deformation. Those features extend the cartridge life and reduce the frequency of replacements compared with basic designs.

• 5oz heavy-duty trilobal filtration fabric resists wear and clogging
• High-strength ABS end caps and integrated support core for stability
• Estimated up to 30% longer service life versus standard cartridges

Are these safe for family pools and spas?

Yes—materials used in Grefilt CCP520 cartridges are tested and certified to NSF/ANSI 50 standards, which verifies they are suitable for pool and spa applications. Certification helps ensure the filter won’t leach harmful substances into treated water.

• NSF/ANSI 50 certified materials for pool and spa safety
• Manufacturing process focused on consistent, non-reactive components
• Replacement parts intended for standard residential and commercial pools

Who is this for? The Grefilt 4-Pack CCP520 cartridges are aimed at pool owners, maintenance pros, and facilities managers who need a reliable, high-capacity replacement for Pentair-style 520 systems. Choose this set if you want longer cleaning intervals, better fine-particle capture, and NSF/ANSI 50-certified materials packaged as a convenient four-cartridge kit to service multi-cartridge housings or keep spares on hand.