Unicel® C-8420 Replacement Filter Cartridge – 200 Sq Ft
Unicel® C-8420 Replacement Filter Cartridge – 200 Sq Ft
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Fits Hayward CX1900RE/CX2020RE & Waterway Pro Clean Series
Think of this as the gold-standard coffee filter for your pool—except it catches sand, algae and debris down to 20 microns, not grounds. With 200 sq ft of heavy-duty, 4-oz polyester media and 236 pleats, the C-8420 keeps your water sparkling-clear season after season—so you can focus on cannonballs, not cleaning.
Key Features
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200 Sq Ft of Media (4-oz basis weight polyester) for massive dirt-holding capacity
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236 Pleats maximize surface area and extend run times between cleanings
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20 Micron Rating catches fine particles so your pool stays crystal clear
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Universal Open End Caps with molded gaskets (4″ inner diameter) for a watertight seal
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Drop-In Fit for Hayward CX1900RE, CX2020RE & Waterway Pro Clean filter housings
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Made in USA—quality you can trust
Specifications
Specification | Detail |
---|---|
Media Area | 200 sq ft |
Pleat Count | 236 |
Material | 4-oz basis weight polyester |
Micron Rating | ~20 microns (average) |
Dimensions (L×OD) | 28 3/16″ × 8 15/16″ (28.19″ × 8.94″) |
End Cap Style | Open with molded gasket |
End Cap ID | 4″ |
Fits Housings | Hayward CX1900RE/CX2020RE, Waterway Pro Clean |
Safety & Maintenance Tips
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🔧 Always shut off the pump and relieve system pressure before removing or installing the cartridge.
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🗓️ Replace every 1–2 seasons (or when differential pressure rises 8–10 psi) to avoid reduced flow or damage.
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♻️ Dispose of used cartridges responsibly—captured debris can include chemicals and fine sediment.



