Tomanic Spa Filter Cartridge 50 sq.ft 2-Pack — Replacement for Unicel 6CH-940 / Filbur FC-0359, NSF-Certified, Trilobal Pleated Me

Tomanic 6CH-940 is a 50 sq.ft NSF/ANSI 50–certified spa filter cartridge designed to replace Unicel 6CH-940, Filbur FC-0359 and similar models, delivering reliable filtration and long service life for hot tubs and spas.

Engineered for compact hot tub systems, this 2-pack of Tomanic spa filters pairs high-filtration surface area with durable trilobal fibers to trap hair, sand, dust and fine debris. Certified by IAPMO R&T to NSF/ANSI 50 for material safety, these cartridges are tailored to fit popular top- and bottom-mounted filter housings and work as direct replacements for many OEM part numbers. The design balances deep-cleaning performance with easy maintenance so owners can restore water clarity without complex steps.

How does this filter improve water clarity in a busy spa?

The Tomanic cartridge uses advanced trilobal fiber media that captures smaller particles and holds more debris between cleanings. Its pleated design increases surface area, reducing flow restriction while maintaining filtration efficiency.

• 50 sq.ft of filtration area per cartridge for extended capture capacity
• Trilobal fibers that trap finer particulates than standard point-bond fabrics
• Pleated construction for better debris distribution and longer intervals between washes

Will this fit my hot tub model and which OEM numbers does it replace?

Tomanic 6CH-940 is sized to match common 6" diameter by 8-1/4" length cartridges and fits many top-handle and 1-1/2" threaded bottom configurations. It’s marketed as a direct substitute for multiple part numbers used across leading manufacturers.

• Direct replacements: Unicel 6CH-940, Filbur FC-0359, Pleatco PWW50P3 and others
• Fits 6" diameter x 8.25" length filter housings with semi-circular top handle
• Bottom: injection molded 1-1/2" SAE thread for compatibility with standard ports

How simple is cleaning and maintenance for these cartridges?

The Tomanic cartridges are built for straightforward cleaning; trapped contaminants rinse out of the pleats and the trilobal fabric regains performance after a wash. Routine maintenance keeps flow and filtration near peak without replacing the cartridge prematurely.

• Washable pleats that shed embedded sediment with a hose or filter cleaner
• Fabric structure resists rapid clogging to extend time between cleanings
• Durable construction supports multiple clean-and-reuse cycles for cost efficiency

What safety or certification information should I know?

Material safety and suitability for spa use are validated: Tomanic cartridges are certified by IAPMO R&T to NSF/ANSI 50, which addresses materials and components intended for use in spa and hot tub equipment. This gives confidence in material composition and basic safety for contact with circulated water.

• IAPMO R&T certification to NSF/ANSI 50 for material safety
• Manufactured from durable pleated trilobal fiber media
• Sold as a 2-pack to replace two cartridges at once or keep a spare on hand

Who is this for? Owners of residential and commercial hot tubs or swim spas who need a direct-fit, NSF/ANSI 50–certified replacement cartridge that balances high filtration area with easy maintenance. It's a practical choice for users of Aber, Waterway, Unicel, Filbur, Pleatco and many OEM spa systems who want dependable water clarity and a longer-lasting replacement component.