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Unicel C-7442 40 sq ft Replacement Filter Cartridge
The Unicel C-7442 is a premium replacement filter cartridge engineered to deliver reliable performance in in-ground pool and spa cartridge filter systems. With 40 square feet of pleated media, it supports efficient filtration, longer service intervals, and consistent water clarity.
Key Features
- 40 sq ft of high-capacity pleated media to extend time between cleanings.
- Heavy-duty polyester construction for durability in pool environments.
- Standard size: approx. 7″ diameter × 14 3/16″ length; top & bottom 3″ open ports for easy fitment.
- Direct replacement for many OEM cartridges; helps maintain optimal flow and clarity.
Technical Specifications
- Part Number: C-7442
- Filtration Area: 40 sq ft
- Dimensions: ~7″ OD × ~14.19″ length
- Media: 4 oz polyester pleated fabric
- Ports: Top & bottom open 3″ ID
Installation & Compatibility Notes
Turn off the pool pump and relieve system pressure before replacing the cartridge. Remove the filter vessel lid and old cartridge, clean the filter tank interior, then install the new C-7442 ensuring correct orientation. Confirm that your filter housing is rated for a 40 sq ft cartridge and that the seal surfaces are intact. After installation, restart the system and monitor pressure to establish a clean starting point.
Maintenance Tips
- Check differential pressure and clean the cartridge when pressure rises 8-10 psi above baseline.
- Rinse the pleated media during maintenance cycles to prolong life and maintain flow.
- Replace the cartridge if media is torn, core collapses, or cleaning no longer restores start-up pressure.
- Ensure the filter housing lid O-ring is lubricated and sealing properly after reassembly.
Why Choose the Unicel C-7442?
For pool professionals and homeowners alike, the C-7442 offers a robust, proven filtration component from a trusted brand. Its high-capacity design, durable media, and broad compatibility make it a smart choice for ensuring sustained water clarity and filter performance.
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