Clarus 4-1/4" x 8" Pool Filter Cartridge – Replaces Intex Type A/C/III, Pleatco PC7-120, Unicel C-4606, C-4607
Clarus 4-1/4" x 8" Pool Filter Cartridge – Replaces Intex Type A/C/III, Pleatco PC7-120, Unicel C-4606, C-4607
- Diameter
- 4 5/8"
- Length
- 8"
- Filtration Area
- 19 Sq. Ft.
- Top
- Handle
- Bottom
- 1 1/2" MPT Threaded
- Features
- Antimicrobial Protection
Compatibility
- Filbur
- FC-0121
- Pleatco
- PTL18, PTL18P4, PTL18-XP, PTL18-4
- Unicel
- 4CH-21
- OEM
- AK-9003,11901, CH19, SD-00001, SD-00821, SD-00838, SD-00845
Frequently Purchased Together
Keep your pool water crystal clear and ready for whatever summer throws your way with the Clarus® CPF-3710 Replacement Filter Cartridge. Built to capture the gunk that clogs flow and clouds water such as dirt, sand, leaves, hair, oils, pollen, and other fine debris—before it messes with your circulation (and your swim time). This filter delivers serious cleaning power with washable, reusable performance that keeps your pool sparkling and swim-ready. Because murky pool water just isn’t an option.
- High-Efficiency, Bigger Results: ProGrade™ pleated media captures everything from fine sand and dust to leaves and body oils, keeping water balanced, clean, and swim-ready.
- Built-In Defense: Antimicrobial protection blocks bacteria, mold, and odor-causing buildup on the filter surface, so it stays fresher between cleanings.
- Stronger Flow, Less Stress: DiamondCore™ Technology improves circulation and prevents clogging to protect your pump and extend equipment life.
- Rinse, Reset, Repeat: The durable, reusable design rinses clean in seconds—no tools, no hassle. Rinse every 1–2 weeks and replace every 2–4 weeks depending on use, or sooner if pleats are damaged or performance won’t return after cleaning.
- Made to Last (Like Your Summer): Reinforced end caps and media resist pressure, backflow, and wear—even after repeated cleanings.
- Protect What Powers Your Pool: Shields your pump and filtration system from debris that causes strain, ensuring smoother performance all season long.
- Peace of Mind: NSF/ANSI 50 Certified for safe, high-performance filtration that keeps your water clear and your swim days uninterrupted.
Technical Details
| SKU | CPF-3710 |
| Filter Dimensions | 4-1/4" L x 8" D |
| Outside Dimensions | 4- 1/4" |
| Length | 8" |
| Top Hole | 1-15/16" |
| Bottom Hole | 1-15/16" |
| Top Style | Open |
| Bottom Style | Open |
| Filter Media | Pleated Polyester |
| Media Weight | 3 |
| Material | Polyester media, Polypropylene end caps & core |
| Micron Rating | 20 |
| Filter Life (months) | 1 month |
| Contaminants Reduced |
Sediment Rust Debris Leaves Insects Hair Algae Dirt Sand Pollen Bacteria Mold Mildew Fungi Biofilm Organic Waste Microscopic Parasites Dust Fine Particles and Odor-Causing Microbes |
| Filter Type | Cartridge |
| Installation Type | Drop In |
| Filter Core | DiamondCore™ |
Warranty / Certifications
| Certifications | NSF 50 |
| Warranty | 1 Year Warranty* |
Additional Resources
Enter your brand and model number to ensure this filter is compatible with your pool system.
| Brand | Model Number |
|---|---|
| Start typing a part number above to see compatible models. | |
Note: Some part numbers may correspond to filters with different filtration surface areas. Check your system’s specs for optimal performance.

















