cylindrical pool filter cartridge with white pleated body and blue caps on a plain white background
cylindrical pleated white filter cartridge with blue end caps standing upright on white background
cylindrical water filter cartridge with blue plastic edges and white pleated filter material on the outside
cylindrical pool filter cartridge with blue plastic end caps and white pleated filter material on a plain background

Unicel C-7680 Replacement Filter Cartridge for Pentair Mitra & Mytilus | 80 Sq. Ft. | 22 1/8"

Regular price$74.99
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$9.99 flat shipping on orders under $100.
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SKU:
C-7680
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About This Item

The Unicel C-7680 is a 4000 Series 80 sq. ft. replacement filter cartridge precision-engineered for Pentair Mitra and Mytilus 80 GPM filtration systems. At 22 1/8" in length with 122 pleats of 4 oz. Reemay 2040 media, this cartridge delivers consistent filtration performance and long service life — a direct OEM match confirmed across both Pentair and Pac Fab model lines.

Specifications

Filter Area 80 sq. ft.
Length 22 1/8"
Outer Diameter 7 7/8"
Top Inner Diameter 3 1/16"
Bottom Inner Diameter 3 1/16"
Material 4 oz. Reemay 2040
Pleat Count 122
Top Cap: Open
Top Cap - Open
Bottom Cap: Open
Bottom Cap - Open

Fits Into:

OEM Brand Product Name Part Number Notes
Pentair Mitra 80 GPM MA-80 R173299
Pentair Mytilus 80 GPM MY 80 R173299
Pentair Mytilus FMY 80 R173299
Pentair Mytilus-B 80 GPM MY 80 R173299
Pentair - Pac Fab Mitra 80 GPM MA-80 17-4984
Pentair - Pac Fab Mytilus 80 GPM MY 80 17-2811
Pentair - Pac Fab Mytilus B 80 GPM MA-80 17-4984
Pentair - Pac Fab Mytilus FMY 80 17-4984

(This is not an exhaustive list.)

Pro Tip: Before ordering, measure your existing cartridge end cap to end cap to confirm the 22 1/8" overall length, 7 7/8" outer diameter, and 3 1/16" inner diameter. Cross-reference your filter housing label for OEM part numbers R173299, 17-4984, or 17-2811 to verify compatibility with your specific Pentair or Pac Fab system.

Also known as: C7680

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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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