POOLPURE Spa Filter Cartridge C-7375 — 14¾" x 7" Replacement for PCD75N/Unicel C-7375, 75 sq ft Trilobal 50‑Micron

POOLPURE C-7375 is a high-efficiency spa filter cartridge engineered to replace PCD75N, Unicel C-7375, and Filbur FC-3964 models while delivering longer life and finer filtration.

This replacement cartridge is built for spa and small pool systems that need dependable debris removal, easy maintenance, and certified material safety. With a 14 3/4" length, 7" outer diameter, and a 75 sq. ft. trilobal filtration surface, the C-7375 balances large dirt-holding capacity with a compact profile that fits many common filter housings. POOLPURE designs this cartridge to be durable, simple to rinse, and efficient at trapping fine particles down to 50 microns.

How does the C-7375 improve water clarity in everyday spa use?

The combination of trilobal filtration fabric and a 50-micron fine-filtration layer captures a broad range of contaminants from sand and dust to hair and organic debris. The trilobal fiber increases surface area for better adsorption, while the fine layer targets smaller particles that cause cloudiness. Together they extend periods between full cleanings and help maintain clearer water.

• 75 sq. ft. filtration area for higher dirt capacity
• Trilobal fabric offers three times the adsorption surface of standard fibers
• 50-micron layer removes up to 99% of fine particulates

Is the POOLPURE C-7375 easy to clean and reuse?

Yes—this filter uses patented dirt-locking technology that captures debris firmly during filtration yet releases it readily during rinsing. The cartridge is designed to rinse clean with a standard garden hose, reducing the time and effort required for maintenance. Frequent rinses restore flow without the need for chemicals or early replacement.

• Dirt-locking structure minimizes deep embedding of debris
• Simple hose-rinse cleaning regenerates filtration performance
• Reusable design lowers long-term maintenance and replacement costs

Will the C-7375 fit my existing filter system?

The C-7375 matches the common dimensions of many spa cartridges: 14 3/4" length, 7" outer diameter, top handle and a 2 11/16" bottom open end. It is compatible with part numbers like PCD75N, Unicel C-7375, and Filbur FC-3964, but it is sold as a POOLPURE replacement unit. Always verify actual measurements before ordering to ensure a proper fit.

• Length: 14 3/4" and Outer Dimension: 7"
• Top: handle; Bottom: 2 11/16" open for common housings
• Cross-references: PCD75N, Unicel C-7375, Filbur FC-3964 and similar part numbers

What materials and certifications back the filter's safety and durability?

POOLPURE constructs the cartridge from 4 oz. thickened polyester fabric, reinforced ABS end caps, and an integrated strengthened core for extended service life—typically over 30% longer than standard cartridges. The materials are IAPMO-tested and meet NSF/ANSI 50 safety standards, meaning components are proven safe for prolonged water contact.

• 4 oz. thickened polyester filter fabric for durability
• Reinforced ABS end caps and strengthened internal core
• NSF/ANSI 50 tested and PHTA industry member standards followed

Who is this for: The POOLPURE C-7375 is suited for spa and small pool owners who need a robust replacement cartridge that balances deep cleaning, simple maintenance, and certified material safety. It's a good fit for homeowners, property managers, and trainers who value longer-lasting parts and fewer interruptions for filter changes. If you use a system that lists PCD75N, Unicel C-7375, Filbur FC-3964, or similar part numbers, and you want improved fine-particle removal plus quick rinsing maintenance, this cartridge is a practical choice.

Performance notes: This is a compatible replacement cartridge produced by POOLPURE. Original manufacturer names and part numbers are referenced only for cross-compatibility and identification. POOLPURE is an independent brand focused on reliable filtration—recognized in athletic and media environments for consistent results.