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B&Q£32.99Visit shop B&Q - Spa Filter Cartridge For Pleatco Prb17.5Sf / Unicel C-4401Ff-Prb17.5Sf-Pair
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The Finest-Filters PRB17.5SF replacement cartridge is designed for spa and pool owners seeking a reliable, high-performance filtration solution that balances deep-cleaning capability with ease of maintenance. Utilizing advanced trilobal fabric technology, this filter offers superior sediment retention and flow efficiency compared to standard cartridges, though owners must ensure compatibility with their specific filter housing dimensions before purchase to avoid fitment issues.
| Model Part Number | PRB17.5SF |
|---|---|
| Brand | Finest-Filters |
It is a compatible replacement for PRB17.5SF, Blue Devil 6456, Filbur FC-2386, and Unicel C-4401.
No, high-pressure water can damage the specialized trilobal fabric. Use a standard garden hose nozzle instead.
While it depends on usage, typically replace the cartridge every 6 to 12 months for optimal performance.
Yes, the reinforced, chemical-resistant end caps are designed to withstand the harsh environments found in both chlorinated and saltwater systems.
Yes, it is designed with a 2 1/8-inch center hole to fit onto the standard filter standpipe.
The filter media may be clogged with debris; remove and rinse the cartridge thoroughly.
Check your chemical balance (pH and sanitizer levels) as the filter may not be the primary cause of water chemistry issues.
Verify that your housing dimensions match the 5-inch diameter and 4 5/8-inch length requirements exactly.
To install, power off your pool or spa pump system and release the pressure from the filter housing. Unscrew the housing lid, remove the old cartridge, and clean the canister interior of any loose debris. Insert the PRB17.5SF cartridge, ensuring it is seated correctly over the center pipe.
Technical Specifications:
For care, use a gentle stream of water to clean the pleats. Do not use high-pressure washers, as these can damage the trilobal fabric. If the filter becomes saturated with body oils or lotions, use a dedicated filter cleaning solution before rinsing.
