Cryspool® 2402 Filter Compatible with Watkins 303279 (not 303263), FC-2402, Free Flow & Lifesmart Hot Tub Filter, 1 1/2in Thread Spa Filter Cartridge, 2 Pack

Overview

Cryspool 2402 is a high capacity spa filter cartridge built to work with a selection of popular hot tub housings. Its dimensions are precise for reliable replacements: length 9 1/2 inches, outside diameter 5 3/8 inches, a top that is closed with a string handle, and a bottom 1 1/2 inch MPT thread. This combination is designed to deliver a snug, straightforward installation across compatible systems while fitting standard filter slots.

The 1 1/2 inch thread size helps ensure a secure connection in many spa models, reducing the chance of gaps or leaks during operation. The overall form is compact enough for tight filter wells while still offering a roomy pleat structure for filtration performance.

Why Cryspool 2402

The filter uses advanced trilobal fiber technology, a feature that many spa owners associate with stronger filtration capacity and longer life compared with typical fabrics. The material structure is designed to encourage deeper impurity penetration into the pleats, which can help keep water looking clear between cleanings. The combination of robust pleats and end caps supports stable positioning in the housing and easier handling during maintenance.

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• Size and fit: 9 1/2 in length, 5 3/8 in diameter, top closed with a string handle, bottom 1 1/2 inch MPT thread.
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• Compatibility: Works with Watkins 303279, 78460, PFF42TC-P4, FC-2402, Free Flow and Lifesmart hot tub filters. Cryspool is an independent brand.
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• Filtration technology: Trilobal fibers provide higher capacity than standard point-bond fabrics for thorough water processing.
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• Cleaning performance: The improved fabric structure allows deeper impurity penetration when washed, often restoring the filter close to new condition.
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• Durability and maintenance: End caps and pleats are designed for easy cleaning and sturdy hold in place; regular cleaning can extend service life and reduce water usage.
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Use and Care

For best results, clean the cartridge when the spa pressure gauge reaches the recommended threshold. Rinse with clean water or follow your spa manufacturer’s cleaning guidance. Let the cartridge dry fully before reinstalling to help maintain its filtration efficiency.

What’s in the Pack

Each order includes a 2 pack of Cryspool 2402 filters, designed to replace compatible hot tub cartridges and keep your system running smoothly.