Unicel® C-8412 Replacement Filter Cartridge – 120 Sq Ft
Unicel® C-8412 Replacement Filter Cartridge – 120 Sq Ft
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Fits Hayward Star-Clear Plus C1200/CX1200RE & Waterway Pro Clean 125
No more guessing whether that bargain cartridge will actually seal—this is the OEM-spec Unicel C-8412, built to the exact tolerances your Hayward and Waterway filters demand. With 172 pleats and 120 sq ft of tough, 4-oz spun-bond polyester media, it traps dust, pollen, algae and other fine debris down to about 20 microns—so you swim in clear water, not murky frustration.
Key Features
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Generous Media Area: 120 sq ft of high-loft polyester for maximum dirt-holding capacity.
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172 Pleats: More surface area means longer run times between cleanings.
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Fine Filtration: Blocks particles down to ~20 microns, keeping your water crisp.
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Durable End Caps: Open top & bottom with 4″ ID molded gaskets for a rock-solid seal.
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OEM Fit & Finish: Made with Reemay® media and reinforced cores—no leak-prone knock-offs here.
Dimensions & Specs
Specification | Detail |
---|---|
Media Area | 120 sq ft |
Pleat Count | 172 |
Material | 4-oz spun-bond polyester |
Micron Rating | ~20 μm |
Diameter (OD) | 8 15⁄16″ (8.9375″) |
Length (OAL) | 23 5⁄16″ (23.3125″) |
End Cap Opening | 4″ ID molded gasket (top & bottom) |
Compatible Filter Housings & Cross-References
This cartridge isn’t one-and-done for Hayward—you’ve got plenty of aftermarket options that all meet the same specs:
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Hayward Star-Clear Plus C1200 / CX1200RE
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Waterway Pro Clean 125 & Clearwater II 125 (817-0125N)
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Filbur FC-1293
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Pleatco PA120-4 (also PWWPC120)
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Pure N Clean PC-120 (check dimensions)
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SD Filtration SD-01073 (verify OAL)
💡 Pro tip: Always match your housing model and overall length, not just the square footage, to avoid pesky leaks or pressure spikes.
Maintenance & Safety Tips
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Power Down & Bleed Pressure: Always shut off the pump and relieve system pressure before swapping cartridges.
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Watch Your Gauge: Replace when your filter pressure gauge climbs 8 – 10 psi above the clean-start reading.
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Seasonal Swap: In most setups, swapping cartridges once per season keeps flow high and energy use low.
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Rinse, Don’t Soak: A good garden-hose rinse between seasons extends service life—skip harsh chemicals and acid.



