Unicel® C-8425 Replacement Filter Cartridge – 250 Sq Ft
Unicel® C-8425 Replacement Filter Cartridge – 250 Sq Ft
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Fits Jandy CS 250
Upgrade your pool’s filtration with the Unicel C-8425—250 sq ft of heavy-duty, 4-oz polyester media wrapped into 250 pleats to trap debris down to ~20 microns.
Key Features
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Huge Media Area: 250 sq ft of 4-oz polyester for massive dirt-holding capacity
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High Pleat Count: 250 pleats maximize surface area for long filter cycles
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Fine Filtration: Captures particles as small as ~20 microns
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OEM Drop-In Design: Open top & bottom with 4″ ID molded gaskets—no adapters needed
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Durable Construction: Spun-bonded polyester resists tearing through repeated cleanings
Dimensions & Specs
| Specification | Detail |
|---|---|
| Media Area | 250 sq ft |
| Pleat Count | 250 pleats |
| Micron Rating | ~20 microns (average) |
| Length | 33 1 / 8 in (33.125″) |
| Outer Diameter | 8 15 / 16 in (8.9375″) |
| End Cap Style | Open top & bottom, 4″ ID molded gasket |
| Material | 4-oz basis-weight polyester |
Dimensions from Voomi Supply
Pleat & micron data from Amazon listing
Maintenance & Safety Tips
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Power Down & Relieve Pressure: Always shut off the pump and bleed off system pressure before changing cartridges.
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Monitor Pressure Gauge: Replace when differential pressure rises 8–10 psi above your clean-start reading.
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Seasonal Swap: In most climates, swapping every 1–2 seasons keeps flow optimal and energy use low.
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Rinse Between Seasons: A thorough garden-hose rinse extends service life—just skip harsh chemicals.
