Name: Unicel 2000 Series 8.5 sq. ft. Replacement Filter Cartridge | C-2303
Brand: Unicel
SKU: C-2303
Price: 23.99 USD
Availability: InStock

Tall cylindrical white pleated replacement filter cartridge with blue caps on both ends and a label with blue text and cartoon character

Tall cylindrical pool filter cartridge with white pleated material and blue caps on both ends standing upright on white surface

cylindrical replacement filter cartridge with blue plastic end and white pleated filter material inside

Cylindrical pool filter cartridge with a blue ring and gray pleated filter material on a white background

$23.99

$9.99 flat shipping on orders under $100.

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SKU:: C-2303

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About This Item

The Unicel C-2303 is a 2000 Series 8.5 sq. ft. replacement filter cartridge engineered for compact spa and chlorinator filter systems. With 150 precision-pleated layers of 3 oz. Reemay 2033 polyester media, this cartridge delivers consistent sub-micron particle capture in a slim 2 7/8" diameter profile — purpose-built for the tight tolerances of Rainbow Plastics and Emerald Spa filtration housings.

Specifications

Filter Area	8.5 sq. ft.
Length	17 1/16"
Outer Diameter	2 7/8"
Top Inner Diameter	2 1/8"
Bottom Inner Diameter	2 1/8"
Material	3 oz. Reemay 2033
Pleat Count	150
Top Cap: Open	Bottom Cap: Open

Fits Into:

OEM Brand	Product Name	Part Number	Notes
Emerald Spas	—	—	—
Pentair - Rainbow Plastics	Chloro Cartridge	17-0052	—

(This is not an exhaustive list.)

Also known as: C2303

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.

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