Unicel 105 Sq. Ft. Cartridge For Clean and Clear Plus 420 & Crystal Water 425 | C-7471

The Unicel C-7471 Filter Cartridge is engineered for dependable mechanical filtration in large cartridge pool filter systems that utilize a 105 square foot element. It features approximately 168 uniform pleats of spun-bonded polyester media designed to capture fine debris and contaminants while allowing steady circulation through the filter. With dimensions of roughly 7 inches in diameter and 26 1/16 inches in length, and open 3 inch end caps, the cartridge installs properly in compatible filter housings used on larger residential pool systems. Reinforced internal construction helps the cartridge retain its shape during operation and repeated cleanings. Scheduled replacement supports stable pressure, efficient filtration, and consistent water clarity.

Highlights

• High-Capacity 105 Sq Ft Media: Expanded pleated surface area improves debris capture and extends service intervals.

• Durable Polyester Filter Construction: Spun-bonded media resists breakdown from pool chemicals and frequent cleaning.

• Open 3 Inch End Caps: Designed to support unrestricted water flow and straightforward installation.

• Large-System Filter Use: Commonly installed in cartridge filter systems serving higher flow residential pools.

• Maintains Filtration Efficiency: Helps control pressure rise and supports smooth circulation performance.

Compatibility

• Pentair Clean and Clear Plus 420 Filters
• Waterway Crystal Water 425 Sq. Ft. Cartridge Filters

Direct Replacement for:

• R173576
• 178584
• 817-0106

Additional Info

The Unicel C-7471 105 Sq Ft Filter Cartridge is designed for reliable filtration in compatible cartridge pool filter systems. This FAQ addresses compatibility, installation guidance, and online ordering considerations to help confirm fitment before service.

Compatibility and Fitment Questions

Verifying cartridge dimensions before ordering helps prevent delays during maintenance.

Which pool filters are designed for the Unicel C-7471?

This cartridge is intended for Pentair Clean & Clear Plus 420 and Waterway Crystal Water 425 systems that use 105 sq ft cartridges with 3 inch open end caps. Online customers often ask this when replacing filter elements.

Will the C-7471 fit other brands with similar square footage?

Square footage alone does not guarantee compatibility. Length, diameter, and end-cap opening must match exactly. Before completing your online order, verify all measurements.

Is this cartridge compatible with variable-speed pump systems?

Yes, the pleated design supports strong flow and stable pressure in variable-speed systems when sized correctly. Proper fit is essential for best performance.

Installation and Troubleshooting

Understanding installation steps helps ensure proper filtration.

How do I install the Unicel C-7471 cartridge?

Remove the old cartridge, clean the filter housing, and slide the new cartridge fully onto the standpipe. Ensure it is seated evenly before closing the tank. Online customers often install this during scheduled cleanings.

What causes high pressure after installing a new cartridge?

High pressure may indicate improper seating, debris in the housing, or plumbing restrictions. Rechecking alignment often resolves the issue. Correct installation restores normal flow.

How can I tell when the cartridge needs cleaning?

Rising pressure, reduced circulation, or cloudy water are common indicators. Regular inspection helps maintain performance. Timely cleaning extends cartridge life.

Online Ordering and Delivery

Planning delivery helps coordinate filter maintenance.

Can I order the Unicel C-7471 online?

Yes, this cartridge can be ordered online and often ships free when applicable. Check delivery estimates at checkout to plan service timing.

How do I confirm this is the correct cartridge before ordering?

Confirm length, diameter, end-cap opening, and filter model compatibility. Reviewing product details helps avoid mistakes before completing your online order.

What should I inspect when the cartridge arrives?

Check pleats, end caps, and dimensions against your old cartridge. Verifying fit early helps prevent installation delays.