Spa Replacement Filter PWW50 Unicel 6CH-940 - 2 Pack

In this review of the Spa Replacement Filter PWW50 Unicel 6CH-940, the bottom line is simple: this two-pack is aimed at hot tub and spa owners who need an affordable, reusable cartridge that fits common replacement models. The reviewer found it noteworthy for replacing Filbur FC-0359 and Waterway 817 0050 models and for its washable Dacron construction that traps hair, leaves, and sediment effectively. If you want a no-frills replacement that is easy to clean and extends time between replacements, this product is worth considering.

Key Features

• Compatibility: Replaces Filbur FC-0359, PWW50P3, Unicel 6CH-940 and Waterway 817 0050 so it fits a wide range of spa models without modification.
• Dirt-Locking technology: The claimed inchDirt-Locking inch fabric captures more contaminants than standard filter cloth, helping keep water clearer between cleanings.
• Dacron construction: The Dacron material increases filtration area and catches fine particles while being washable and reusable for multiple cycles.
• Trilobal fabric structure: The unique fiber shape is designed to hold a larger volume of debris which can reduce how often you need to deep clean the cartridge.
• Two-pack convenience: Includes two identical cartridges so users have a spare on hand during cleaning or replacement.

Who It's For

This cartridge set is best for spa and hot tub owners who prioritize ease of maintenance and broad compatibility with common replacement models like Filbur FC-0359 and Unicel 6CH-940. It suits people who clean and rotate filters regularly and want a washable, reusable option rather than a disposable one.

Those who need OEM-branded materials with tightly controlled manufacturing tolerances or who expect premium longevity beyond the typical 1-2 year life with maintenance should look elsewhere. Users seeking ultra-high end or proprietary filter styles for specialty systems may prefer factory original parts.

Pros & Cons

Pros

• Good fit for the listed replacement models, with many customers reporting accurate compatibility.
• Washable Dacron fabric increases filtration area and reduces frequency of replacements.
• Two-pack gives immediate backup during cleaning cycles and adds value.
• Trilobal fiber design helps capture larger volumes of debris without rapid pressure rise.

Cons

• Some buyers reported mixed opinions on overall quality, so fit is reliable but perceived durability varies by user experience.
• Not labeled as an OEM part, which may concern owners seeking original manufacturer assurance.

Specifications

Replacement models	Filbur FC-0359, PWW50P3, Unicel 6CH-940, Waterway 817 0050
Thread type	1 1/2 in SAE screw in
Material	Dacron filtration fabric with trilobal structure
Pack contents	2 spa filter cartridges
Removes	Hair, leaves, dust, sediment, sand
Service life	Typically 1-2 years with proper maintenance

Our Verdict

The Unicel 6CH-940 style spa replacement filter in this two-pack is a practical, cost-conscious choice for most hot tub owners who need reliable compatibility and washable filtration. It delivers strong particle capture thanks to Dacron and trilobal fibers and gives good value with two cartridges included, though buyers should be aware that perceived build quality varies among users.

Frequently Asked Questions

Will this filter fit my spa that uses Filbur FC-0359?
Yes, this cartridge is listed as a direct replacement for Filbur FC-0359 and several equivalent models, including PWW50 and Unicel 6CH-940.

How often should I replace or clean the filter?
The filter is washable and reusable; expect routine cleaning and rotation, and full replacement roughly every 1-2 years with regular maintenance.

What kind of debris does it capture?
The Dacron fabric with Dirt-Locking design captures hair, leaves, dust, sediment and sand to help keep spa water clearer.