POOLPURE 6CH-940 Spa Filter Replacement - Reliable 50 sq ft Filtration

Our review of the POOLPURE 6CH-940 Spa Filter finds it best for spa and hot tub owners who need a dependable, easy-to-clean replacement that matches common 6CH-940 style cartridges. The single biggest reason to buy is the filter material: a trilobal filtration fabric with a 50 sq. ft. surface that captures hair, dust, sand and sediment down to about 50 microns while maintaining low back pressure, so systems run efficiently without frequent replacement. This review covers fit, performance, and maintenance based on product specifications and user feedback.

Key Features

• Size and fit: At 7 5/8' length and 6' outside diameter the cartridge fits standard 6CH-940 style housings and replaces several common part numbers.
• Threaded connection: The bottom 1 1/2' SAE thread provides a secure screw-in fit for front access skimmers and many popular spa models.
• Filtration area: The 50 sq. ft. filtration area gives a large surface for trapping debris while keeping flow and back pressure balanced.
• Trilobal fabric: The unique trilobal filtration fabric increases surface area and improves particle capture and release during cleaning.
• NSF/ANSI 50 certified: Tested by IAPMO to NSF/ANSI 50 standards, the filter uses safe materials suitable for pool and spa water contact.
• Compatible replacements: Designed to work as a compatible replacement for multiple OEM parts, simplifying sourcing for common spa and swim spa models.

Who It's For

This cartridge suits spa and hot tub owners who need a dependable, readily available replacement for 6CH-940 style filters, especially those who clean cartridges regularly and want a fabric that rinses out easily. It is also good for owners of Endless Pools swim spas and other systems where customers reported a proper fit and straightforward installation.

Those who should look elsewhere include owners requiring a non-threaded or a different-length cartridge, or users who need a niche OEM-only part; this is a compatible replacement and not sold as an original manufacturer item.

Pros & Cons

Pros

• Works well as a replacement for several common models and fits standard front access skimmer threads.
• Quality trilobal fabric offers strong filtration and easy cleaning, reducing maintenance time.
• NSF/ANSI 50 certification provides confidence in material safety for pool and spa use.

Cons

• Compatibility note: it replaces PWW50P3 style parts but not every OEM variant, so confirm model fit before purchase.

Specifications

Length	7 5/8 in
Outside Diameter	6 in
Top	Circular Handle
Bottom Thread	1 1/2 in SAE
Filtration Area	50 sq. ft
Filter Material	Trilobal Filtration Fabric

Our Verdict

The POOLPURE 6CH-940 is a practical, value-minded replacement cartridge for most spa and small swim spa owners who need reliable filtration and easy maintenance. Its 50 sq. ft. trilobal fabric balances capture efficiency and cleanability, and NSF/ANSI 50 certification adds material safety assurance, making it a solid buy for routine replacement cycles.

Frequently Asked Questions

Will this filter fit my 6CH-940 spa?
It is designed for 6CH-940 style cartridges and compatible with listed part numbers, but confirm length and 1 1/2' SAE thread fit for your unit.

How often should I clean the cartridge?
Manufacturers recommend cleaning monthly depending on usage; the trilobal fabric rinses out more easily than some older materials.

Is this an original manufacturer part?
No, this is a compatible replacement sold under the POOLPURE brand and referenced OEM numbers are for fit guidance only.