Unicel C-4327AM Replacement Spa Filter Cartridge | 27.5 Sq. Ft. | Antimicrobial | Saratoga Spas 20242-238
Unicel C-4327AM Replacement Spa Filter Cartridge | 27.5 Sq. Ft. | Antimicrobial | Saratoga Spas 20242-238
Unicel C-4327AM Replacement Spa Filter Cartridge | 27.5 Sq. Ft. | Antimicrobial | Saratoga Spas 20242-238
Unicel C-4327AM Replacement Spa Filter Cartridge | 27.5 Sq. Ft. | Antimicrobial | Saratoga Spas 20242-238

Unicel C-4327AM Replacement Spa Filter Cartridge | 27.5 Sq. Ft. | Antimicrobial | Saratoga Spas 20242-238

Regular price$41.99
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$9.99 flat shipping on orders under $100.
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SKU:
C-4327AM
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About This Item

Unicel's C-4327AM delivers 27.5 square feet of filtration in a 4000 Series spa cartridge built with antimicrobial-treated 3 oz. Reemay 2033 media. With 158 precision-formed pleats packed into an 11 5/8" profile, this cartridge maximizes surface area for thorough debris capture while the antimicrobial treatment inhibits bacteria, mold, and mildew growth directly on the filter media — keeping pleats cleaner between wash cycles and extending service life.

⚠️ IMPORTANT: ADAPTER REQUIRED — NOT INCLUDED
This cartridge uses an open w/ slots bottom cap that locks onto a reusable tabbed thread adapter seated in your spa's skim well. This adapter is not furnished with the cartridge — it transfers from your existing filter setup. Before ordering, confirm your adapter is present and in good condition. If the adapter is missing, you will not be able to install this filter.

Specifications

Filter Area 27.5 sq. ft.
Length 11 5/8"
Outer Diameter 4 5/8"
Top Inner Diameter N/A
Bottom Inner Diameter 1 7/8"
Material 3 oz. Reemay 2033 w/ antimicrobial
Pleat Count 158
Top Cap: molded cone handle
Top Cap
Bottom Cap: open w/ slots
Bottom Cap

Note from Unicel: Requires existing tabbed thread adapter in skim well (not furnished). Manufactured with antimicrobial filter media.

Fits Into:

OEM Brand Product Name Part Number Notes
Saratoga Spas 20242-238 (alt: 74452) Verify fit by dimensions; part number may vary by model year
Unicel (Standard Media) C-4327 Non-antimicrobial version — identical dimensions

(This is not an exhaustive list.)

Pro Tip: The antimicrobial treatment in this cartridge inhibits bacteria, mold, and mildew growth on the filter media itself — it does not sanitize spa water or reduce the need for chlorine, bromine, or other water care products. Before installing, confirm your tabbed thread adapter is seated securely in the skim well. The molded cone handle makes removal straightforward — twist, lift, and rinse.

Also known as: C4327AM

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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.

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