SLSM PWW50 Spa Filter Cartridge 6CH-940 Compatible — 1 1/2" SAE Screw-In, 2-Pack Washable Dacron

The SLSM PWW50 spa filter (Unicel 6CH-940 compatible) is a washable, screw-in cartridge designed to trap hair, leaves, dust, sand and sediment for cleaner hot tub water.

Built as a direct replacement for common spa cartridges, this SLSM filter pairs a durable Dacron media with a threaded 1 1/2" SAE screw-in base to deliver larger filtration area and longer usable life than basic pleated filters. Sold as a two-pack, it fits many popular models such as Filbur FC-0359, PWW50P3, Waterway 817 0050 and others, letting you quickly restore circulation and clarity without buying OEM-priced parts.

How does this filter improve spa water clarity?

The filter’s Dacron fibers and trilobal fabric structure capture a wide range of contaminants more effectively than simple polyester pleats. That means smaller particles settle into the media while larger debris collects on the surface, reducing re-release and keeping your tub clearer between cleanings.

• Multi-fiber Dacron material catches finer particulates and visible debris.
• Trilobal weave increases surface area without raising pressure drop.
• Washable design lets you remove trapped dirt and reuse the cartridge.

Will this cartridge fit my hot tub or spa?

This SLSM cartridge is manufactured to match the dimensions and 1 1/2" SAE threaded screw-in base used by many OEM replacements, so it fits the listed models and other units using the same standard. Measure your current filter’s thread type and overall length to confirm compatibility before ordering.

• Directly replaces Filbur FC-0359, PWW50P3 and Unicel 6CH-940 models.
• Also compatible with Waterway part numbers like 817 0050 and 25252.
• 1 1/2" SAE screw-in base for quick swap without adapters.

How often should I clean or replace this filter?

Cleaning frequency depends on spa usage and local water conditions; typically rinse or soak the cartridge every 2–6 weeks and perform a deeper cleaning monthly for heavily used tubs. With proper maintenance, the durable construction can last 1–2 years before performance declines and replacement is recommended.

• Rinse weekly for light use; deep clean monthly for heavy use.
• Soak in a filter cleaner occasionally to remove oils and scale.
• Replace after 1–2 years depending on wear and tear.

What does the package include and how do I get support?

Your purchase ships with two SLSM PWW50/Unicel 6CH-940 compatible spa cartridges, so you have a ready spare when one is cleaning. SLSM offers customer support through the store contact email for help with fitment or product questions.

• Two washable screw-in spa filter cartridges per package.
• Instructions for basic cleaning and reinstallation included.
• 7-day, 24-hour customer support available via the store's service email.

Who is this for? Spa owners and service technicians seeking an affordable, high-capacity replacement filter that is easy to install and maintain. It’s ideal for hot tubs that use the 1 1/2" SAE screw-in standard and for anyone who prefers washable cartridges to disposable options. Choose SLSM PWW50 when you want a durable, reusable filter compatible with common Filbur, Unicel and Waterway models to keep your spa running smoothly and your water clearer between chemical treatments.