Tall cylindrical pool filter cartridge with white pleated material and blue edges standing upright on white background
Tall cylindrical pool filter cartridge with white pleated material and blue end caps standing upright on a white background
blue circular top of a cylindrical replacement filter cartridge with perforated inner structure visible in the center
cylindrical pool filter cartridge with bright blue top and visible internal support structure on white background

Unicel 8000 Series Replacement Filter Cartridge for Jandy CS250 | 250 sq. ft. | C-8425

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Regular price$168.99
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SKU:
C-8425
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About This Item

The Unicel 8000 Series C-8425 delivers 250 sq. ft. of filtration surface in a precision-engineered replacement cartridge built to exact Jandy CS250 specifications. With 250 pleats of heavy-duty 4 oz. Reemay 2040 spun-bonded polyester media, this cartridge captures fine debris and maintains water clarity over extended service intervals. Open end caps with integrated molded gaskets ensure a secure, bypass-free seal on every installation.

Specifications

Filter Area 250 sq. ft.
Length 33 1/8"
Outer Diameter 8 15/16"
Top Inner Diameter 4"
Bottom Inner Diameter 4"
Material 4 oz. Reemay 2040
Pleat Count 250
Top Cap: open w/ molded gasket
Top Cap
Bottom Cap: open w/ molded gasket
Bottom Cap

Fits Into:

OEM Brand Product Name Part Number Notes
Jandy CS250 R0462500

(This is not an exhaustive list.)

Also known as: C8425

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Unicel Filter Cartridges and DE Grids

About Unicel Filter Cartridges and DE Grids

The "Gold Standard" of Replacement Cartridges
For over 50 years, Unicel (Meissner Mfg.) has been the professional's choice for restoring pool water clarity. While generic "knock-off" filters often use cheap, fuzzy fabric that clogs quickly, Unicel uses genuine Reemay® Filtration Media. This patented synthetic fiber features a unique trilobal shape that traps significantly more dirt and oils without choking your pump's water flow. Based in California, Unicel doesn't just copy filter dimensions; they engineer them to strict Original Equipment Manufacturer (OEM) specifications. This ensures a "lock-tight" fit in your filter tank, preventing debris from bypassing the system and returning to your pool.

Why We Trust Unicel Filter Cartridges and DE Grids
Genuine Reemay® Media: Uses continuous trilobal fibers to capture microscopic debris without restricting water flow.

Precision "Exact Fit": Engineered to match your tank's original specifications for a 100% leak-free seal.

Made in the USA: Manufactured in California with heavy-duty urethane end caps that resist cracking under pressure.

Longer Lifespan: Sharp, rigid pleats resist collapsing during cleaning, meaning you buy fewer replacements over time.

More about Pool and Spa Filter Cartridges

Complete Your Pool Care Routine

Essential Pairing
Filter Cleaning Chemicals for All Types of Pool & Spa Filters

Using a specialized cleaner like FilterWash helps release deeply embedded oils and minerals that standard rinsing leaves behind.

Shop Filter Cleaning Chemicals for All Types of Pool & Spa Filters
Highly Recommended
Pool and Spa Plumbing Lubricants

Every time you open your filter tank, you must lubricate the O-ring to prevent dangerous leaks and ensure a watertight seal.

Shop Pool and Spa Plumbing Lubricants
Pro Tip: Don't Forget
Pool Test Kits and Water Analysis Tools

Balanced water pH prevents calcium scale from hardening your filter fabric and ruining your new cartridges.

Shop Pool Test Kits and Water Analysis Tools

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