Cylindrical pool filter cartridge with blue top and bottom edges and white pleated body with barcode label
cylindrical cartridge filter with white pleated paper and blue plastic top and bottom edges on a white background
Cylindrical micro filter cartridge with pleated white filtering material and blue plastic end cap marked with C-8341
Cylindrical pool filter cartridge with blue end caps and white pleated filter material in the center

Unicel Replacement Filter Cartridge 40 sf Micro Filter | C-8341

Regular price$50.99
/
$9.99 flat shipping on orders under $100.
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SKU:
C-8341
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About This Item

The Unicel 8000 Series C-8341 is a 40 sq. ft. replacement micro filter cartridge engineered for Master Spas Eco-Pur filtration systems. With 267 precision pleats of 3 oz. Reemay 2033 media packed into a compact 6 3/4" profile, this cartridge delivers exceptional fine filtration in the tight geometry of the Eco-Pur filter housing.

⚠️ IMPORTANT: TWO CARTRIDGES REQUIRED
The Master Spas Eco-Pur filtration system (2006 to present) requires two (2) of these 40 sq. ft. cartridges per complete filter service. Be sure to order a quantity of two for a full replacement.

Specifications

Filter Area 40 sq. ft.
Length 6 3/4"
Outer Diameter 8"
Top Inner Diameter 4"
Bottom Inner Diameter 4"
Material 3 oz. Reemay 2033
Pleat Count 267
Top Cap: open w/ raised ring
Top Cap
Bottom Cap: open w/ raised ring
Bottom Cap

Fits into:

OEM Brand Product Name Part Number Notes
Master Spas Micro Filter Part of Eco-Pur filtration system, 2006 to present; two 40 sq. ft. cartridges required.

(This is not an exhaustive list.)

Also known as: C8341

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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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