Unicel 5CH-352 Spa Filter Cartridge – Coleman & Freeflow Replacement

Keep Your Spa Water Crystal Clear with Premium Filtration

Enjoy consistently clean, clear, and healthy spa water with the Unicel 5CH-352 Spa Filter Cartridge, a premium replacement filter trusted by spa owners and professionals. Designed for Coleman Spas, Freeflow Spas, and other compatible hot tubs, this high-performance cartridge captures dirt, oils, and debris down to the finest particles—helping your system run efficiently while extending the life of your pump and heater.

Made with durable Reemay® filter media and precision-engineered pleats, the Unicel 5CH-352 provides reliable water clarity and strong flow, making it a top choice for spa maintenance.

Engineered for Superior Filtration Efficiency

Every Unicel filter is designed for maximum surface area and filtration performance. The 5CH-352 features dense pleat spacing and a high-capacity polyester media that traps contaminants while maintaining powerful water flow.

This ensures consistent filtration without overworking your spa pump, keeping water circulation smooth and clean.

Key Benefits

• Premium Reemay® filtration media for long-lasting performance.

• Removes dirt, body oils, lotion, and fine particles efficiently.

• Durable end caps and reinforced core for long-term reliability.

• Maintains optimal water flow for balanced pressure and efficiency.

• Easy-to-clean pleated design extends cartridge life.

• Precision fit for Coleman and Freeflow spa models.

The result? Clearer, healthier spa water that feels and looks fresh every day.

Compatible with Coleman, Freeflow & More

The Unicel 5CH-352 filter is a direct replacement for several popular spa filter models. It matches the exact specifications and performance of original OEM filters used in many top spa brands.

Common Compatible Models

• Coleman Spas (select 100 and 300 series)

• Freeflow Spas (Mini, Azure, Excursion, and others)

• Maax Spas, Infinity Spas, and compatible 5CH-series filters

If your old filter measures approximately 6 inches long and 5 ⅜ inches in diameter with a 2-inch male threaded (MPT) bottom, the Unicel 5CH-352 is your perfect replacement.

Built to Last – Durable Core and End Caps

The heavy-duty ABS end caps and reinforced center core provide structural strength to resist pressure and collapse. Combined with its premium pleated media, the Unicel 5CH-352 offers long-lasting filtration that withstands the rigors of spa environments—hot water, chemical exposure, and repeated cleaning cycles.

This design ensures even water distribution through every pleat, preventing clogging and maintaining consistent pressure throughout the filtration cycle.

Easy to Install and Maintain

Swapping your old spa filter for the Unicel 5CH-352 is simple and tool-free.

Installation Steps

1. Turn off your spa system and remove the old filter.

2. Rinse filter housing to clear any loose debris.

3. Thread the 5CH-352 into place by hand until snug—no tools needed.

4. Turn your system back on and check for normal flow.

Cleaning Tips

• Rinse your filter every 2–4 weeks using a hose or cartridge cleaner.

• Use a filter cleaning solution every 1–2 months for deep cleaning.

• Replace your cartridge every 12–18 months, depending on usage.

Regular cleaning improves performance and extends filter life significantly.

Protect Your Pump and Heater

A clean filter is more than just a water-quality improvement—it’s vital protection for your spa’s equipment. The Unicel 5CH-352 keeps debris and oils from entering sensitive components like the circulation pump, jets, and heater, preventing clogging and reducing strain on the system.

With proper maintenance, you’ll enjoy smoother operation, quieter performance, and fewer costly repairs over time.

Trusted Reemay® Filtration Media

The Unicel 5CH-352 uses genuine Reemay® spunbond polyester, recognized as the industry gold standard for durability and efficiency. Reemay’s non-woven design provides deep particle capture and chemical resistance, allowing repeated cleanings without compromising filter integrity.

You’ll get:

• Better dirt retention capacity

• Consistent pore size for finer filtration

• Superior structural strength under pressure

• Longer cartridge lifespan compared to generic filters

It’s a difference you’ll see in both your water clarity and system performance.

When to Replace Your Filter

Even the best spa filters wear out over time. Replace your Unicel 5CH-352 when you notice:

• Reduced water flow or pressure

• Cloudy or murky water after cleaning

• Visible cracks, fraying, or loose end caps

• Excessive buildup that won’t rinse clean

Regular replacement helps maintain peak spa performance and keeps your water feeling fresh and inviting.

Product Specifications

Storage and Handling

When storing replacement filters, keep them in a cool, dry location away from direct sunlight. Avoid crushing or stacking filters in a way that distorts pleats or caps. For best results, always rinse the new filter before its first use.

Why Choose Unicel Spa Filters

Unicel® has been the leading name in cartridge filtration since 1956, known for its precision manufacturing and consistent quality. Every Unicel cartridge is made in the USA using high-grade materials and tested for dimensional accuracy and strength.

The Unicel Advantage

• Genuine Reemay® media for dependable filtration.

• Precision-molded cores for even flow.

• Long service life even under heavy use.

• Trusted by spa manufacturers worldwide.

Choosing Unicel ensures your spa water stays clean, balanced, and perfectly filtered for a better soak every time.

Buy with Confidence from Benchmark Pool Supply

At Benchmark Pool Supply, we carry authentic Unicel replacement cartridges designed to fit a wide range of spas and hot tubs. The Unicel 5CH-352 offers OEM-level performance and durability for Coleman, Freeflow, and other compatible models.

We provide fast shipping, verified authentic parts, and expert support to ensure your spa system performs at its best season after season.

---

Frequently Asked Questions

What spas does the Unicel 5CH-352 fit?

The Unicel 5CH-352 Spa Filter Cartridge fits Coleman, Freeflow, and several other spa models that use a 5⅜" diameter, 6" length cartridge with a 2" MPT threaded bottom.

How often should I clean or replace the filter?

Rinse every 2–4 weeks, deep clean monthly, and replace every 12–18 months, depending on spa usage and water quality.

What is the filtration area of this cartridge?

The Unicel 5CH-352 offers 25 square feet of high-efficiency filtration area for optimal water clarity and flow.

Is this a genuine Unicel filter?

Yes. This is an authentic Unicel® product, made in the USA with Reemay® polyester media for long-lasting durability and performance.

Can I use this in a hot tub with ozone or salt systems?

Absolutely. The Reemay® media is chemically resistant and safe for use with ozone, bromine, and saltwater sanitation systems.