Cylindrical white pleated pool filter cartridge with blue end caps and a label featuring a cartoon character and product information
cylindrical pool and spa filter cartridge with white pleated material and blue plastic end caps on a white background
cylindrical pool filter cartridge with a blue plastic end cap and pleated white filter material
White cylindrical pool filter cartridge with a bright blue circular end cap and a hollow center for water flow

Unicel C-6430 Replacement Filter Cartridge | 30 sq. ft. | Hot Springs Spas

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Regular price$40.99
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$9.99 flat shipping on orders under $100.
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SKU:
C-6430
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About This Item

The Unicel 6000 Series C-6430 is a precision-engineered 30 sq. ft. replacement filter cartridge built for Hot Springs Spas (Watkins Wellness). Constructed from 4 oz. Reemay 2040 polyester media with 124 pleats, this cartridge delivers reliable filtration performance and extended service life — engineered to exact OEM dimensional tolerances for a drop-in fit.

⚠️ IMPORTANT: MODEL YEAR RESTRICTION
This cartridge is compatible with Hot Springs Spas models dated after 1990 only. Verify your spa's manufacture date before ordering.

Specifications

Filter Area 30 sq. ft.
Length 10 1/2"
Outer Diameter 6"
Top Inner Diameter 1 15/16"
Bottom Inner Diameter 1 15/16"
Material 4 oz. Reemay 2040
Pleat Count 124
Top Cap: open
Top Cap
Bottom Cap: open
Bottom Cap

Fits into:

OEM Brand Product Name Part Number Notes
Hot Springs Spas 31489 Models dated after 1990.
Hot Springs Spas 71825 Models dated after 1990.
Hot Springs Spas 71826 Models dated after 1990.

(This is not an exhaustive list.)

Also known as: C6430

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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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