Tall cylindrical pleated pool filter cartridge with blue end caps and a label on front against white background
Tall cylindrical pool filter cartridge with white pleated material and blue end caps on plain background
cylindrical pool filter cartridge with blue plastic end caps and pleated white filter material inside
cylindrical pool filter cartridge with white pleated fabric and blue plastic end caps isolated on light grey background

Unicel C-7496 Replacement Filter Cartridge 105 sq. ft. | Pentair & Purex CF-105/315

Regular price$97.99
/
$9.99 flat shipping on orders under $100.
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SKU:
C-7496
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About This Item

Unicel's 7000 Series C-7496 delivers 105 sq. ft. of filtration surface area in a precision-engineered replacement cartridge purpose-built for the Pentair and Purex CF-105/315 multi-element filter systems. Constructed with 4 oz. Reemay 2040 spunbond polyester media across 172 pleats, the C-7496 provides exceptional dirt-holding capacity and long service life — engineered to Unicel's exacting dimensional tolerances for a secure, leak-free fit every time.

⚠️ IMPORTANT: Full Filter Service Requires 3 Cartridges
Your Pentair / Purex CF-105/315 filter requires 3 cartridges for a complete service. The "315" in the filter name represents the total system filtration area — three 105 sq. ft. cartridges working together (3 × 105 = 315 sq. ft.). Replacing all three cartridges at the same time ensures consistent flow, balanced filtration, and full filter efficiency. Add 3 units to your cart for a complete filter change.

Specifications

Filter Area 105 sq. ft.
Length 25 5/8"
Outer Diameter 7"
Top Inner Diameter 2 15/16"
Bottom Inner Diameter 2 15/16"
Material 4 oz. Reemay 2040
Pleat Count 172
Top Cap: open
Top Cap
Bottom Cap: open
Bottom Cap

Fits into:

OEM Brand Product Name Part Number Notes
Pentair CFM Filter CF-105/315 R173315 3 cartridges required for full service. R173315 is the OEM part number for the complete 3-cartridge set.
Pentair CFW Filter CF-105/315 R173315 3 cartridges required for full service. R173315 is the OEM part number for the complete 3-cartridge set.
Pentair – Purex CFM Filter CF-105/315 07-0231 3 cartridges required for full service. 07-0231 is the legacy Purex part number for this filter system.
Pentair – Purex CFW Filter CF-105/315 07-0231 3 cartridges required for full service. 07-0231 is the legacy Purex part number for this filter system.

(This is not an exhaustive list.)

Also known as: C7496

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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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