SKTLBB Spa Filter Cartridge 6CH-940 Replacement 2-Pack — PWW50P3 Fit, 45 sq ft Dacron

The SKTLBB 6CH-940 is a 2-pack replacement spa filter cartridge designed to match Unicel 6CH-940 and Pleatco PWW50P3-style hot tub filters, delivering 45 sq. ft. of filtration in an 8¼" x 6" housing with a 1½" SAE threaded base.

This replacement cartridge fits a wide range of massage pool and hot tub housings that accept PWW50P3-compatible elements. Built from trilobal Dacron fabric, each cartridge balances filtration efficiency and durability for routine spa maintenance. The set includes two identical cartridges so you can swap or service filters without delay.

Will this filter fit my hot tub or spa model?

The SKTLBB 6CH-940 replaces Unicel 6CH-940 and Pleatco PWW50P3-style cartridges but is not compatible with PWW50P4. Check your old cartridge dimensions and thread type before ordering. Confirm these key measurements to ensure a correct fit.

• Length: 8 1/4" (approx. 210 mm)
• Outside diameter: 6" (approx. 152 mm)
• Bottom connection: 1 1/2" SAE threaded base
• Filtration area: 45 sq. ft., compatible part numbers listed (Unicel 6CH-940, Filbur FC-0359, Waterway 817-0050)

How effective is the filtration and what debris will it catch?

This cartridge uses a trilobal Dacron filtration fabric that captures common spa debris while allowing good water flow. It removes hair, leaves, dust, sediment and fine particles that can cloud water and stress the circulation system. Regular cleaning restores flow and extends usable life.

• Traps hair, lint and organic debris that cause clogging
• Removes sand and sediment to protect pumps and jets
• 45 sq. ft. media area balances particle capture and flow rate

How do I clean and maintain these cartridges?

Routine maintenance keeps filtration efficient: rinse the cartridge with a hose to remove loose debris, and use a filter cleaner soak for deeper cleaning. Inspect for ripped pleats or hardened deposits; replace when cleaning no longer restores flow. The heavy-duty Dacron fabric tolerates multiple cleanings but is not indestructible.

• Rinse with a high-pressure spray along pleats regularly
• Soak in a recommended cartridge cleaner for stubborn oils/scale
• Replace if pleats are damaged or flow remains poor after cleaning

What makes SKTLBB’s replacement different from generic cartridges?

SKTLBB uses a trilobal weave Dacron fabric for repeated cleaning cycles and a consistent filtration surface area. The precision dimensions and SAE-threaded base match OEM references to simplify swapping. Each 2-pack provides a backup so maintenance is faster and downtime is reduced.

• Durable trilobal Dacron media for repeatable cleanings
• Manufactured to match key OEM measurements and threads
• Sold as a 2-pack to keep a spare ready during servicing

Who is this for: The SKTLBB 6CH-940 2-pack suits spa and hot tub owners who need an OEM-compatible replacement for Unicel 6CH-940 or Pleatco PWW50P3-style cartridges, service technicians stocking common filter sizes, and anyone who prefers a spare cartridge on hand to minimize maintenance downtime. It’s intended for mechanical filtration of solids in recirculating massage pools and hot tubs — verify compatibility by comparing length, diameter, and the 1½" SAE threaded base before purchase.