White cylindrical pool filter cartridge with blue edges and multiple vertical pleats standing upright with product label
tall cylindrical pool filter cartridge with white pleated material and blue ends standing upright on white background
cylindrical pool filter cartridge with blue plastic end caps and pleated white filter material visible through center hole
Close-up view of a cylindrical pool filter cartridge with a bright blue plastic end cap and white pleated filtration material

Unicel C-7470-4 Replacement Filter Cartridge Set (4-Pack) for Pentair Clean & Clear Plus 320 & Waterway Crystal Water 325 | 80 Sq. Ft. Each | 20"

Regular price$293.99
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SKU:
C74704
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About This Item

Replace your entire filter cartridge set in one order. The Unicel C-7470-4 is a complete 4-pack of C-7470 7000 Series replacement cartridges for the Pentair Clean & Clear Plus 320 (CCP320) and Waterway Crystal Water 325 systems — delivering 320 sq. ft. of combined filter area (4 × 80 sq. ft.) when installed as a full set. Each cartridge features 170 pleats of 4 oz. Reemay® 2040 spun-bonded polyester media, precision-matched to your filter housing's dimensional requirements.

⚠️ IMPORTANT: Verify Your Filter Model Before Ordering
This 4-pack is designed for the Pentair Clean & Clear Plus 320 (CCP320) and Waterway Crystal Water 325 systems. Other Clean & Clear Plus models (CCP420, CCP520) require different cartridges. If you only need a single replacement cartridge, see the Unicel C-7470 (Single Cartridge).

Specifications

Filter Area (Each) 80 sq. ft.
Combined Filter Area (Set of 4) 320 sq. ft. (4 × 80 sq. ft.)
Length 20"
Outer Diameter 7"
Top Inner Diameter 3"
Bottom Inner Diameter 3"
Material 4 oz. Reemay® 2040 spun-bonded polyester
Pleat Count (Each) 170
Top Cap: Open
Top Cap — Open
Bottom Cap: Open
Bottom Cap — Open

Fits into:

OEM Brand Product Name Part Number Notes
Pentair Clean & Clear Plus 320 (CCP320) R173573 Complete set of 4 required per system
Pentair (Pac-Fab) Clean & Clear Plus 320 (CCP320) 178580 Complete set of 4 required per system (legacy Pac-Fab P/N)
Waterway Plastics Crystal Water 325 sq. ft. 817-0081 Complete set of 4 required per system

(This is not an exhaustive list.)

Pro Tip: Replacing all four cartridges at once is the recommended practice — mismatched cartridge ages create uneven flow resistance across the manifold, reducing overall filtration efficiency. Confirm your filter model on the housing label before ordering: CCP320 and Crystal Water 325 take four C-7470 cartridges (20" long, 7" OD, 3" ID). Need just one cartridge? See the Unicel C-7470 Single Cartridge.

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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.

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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.

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