Spa Filter Compatible with FC-2402 & 5CH-37, 2 Pack - Reliable Fit

In this review the reviewer looks at a practical replacement spa filter sold as a 2 pack for common hot tub models. The bottom line: this filter is for hot tub owners who need a direct-fit, longer cartridge to restore clear water without fuss. It stands out because the size and thread details match many OEM part numbers including FC-2402 and Watkins 303279, so it is most useful when fit and straightforward maintenance are the priority.

Key Features

• Compatibility: Works as a replacement for FC-2402, 5CH-37, Watkins 303279, 78460 and similar models so users can swap cartridges without reworking plumbing.
• Filter Size: The cartridge measures 9 1/2 in length and 5 3/8 in outside diameter which helps ensure proper coverage of the filter housing for effective debris capture.
• Top and Bottom Design: A closed top with string handle and a 1 1/2 in MPT threaded bottom make removal and installation straightforward and reduce handling mess.
• Cleaning and Lifespan: The pleated media is easy to clean with routine maintenance, offering a longer usable life when rinsed and soaked properly.
• Easy Installation: The straightforward shape and standard threads mean most owners can replace cartridges quickly without tools or service calls.
• Independent Brand: As an independent replacement part, it provides an affordable option for repair without relying on dealer-only parts.

Who It's For

This cartridge is ideal for owners of Free Flow, Lifesmart and other hot tubs that list FC-2402, 5CH-37 or Watkins 303279 as compatible parts; it fits systems that accept a 9 1/2 in cartridge with 1 1/2 in MPT threads. It is also a good choice for do-it-yourselfers who prefer a simple replacement that they can install and clean themselves.

It is not the best option for someone who requires an exact OEM-branded part for warranty reasons or for tubs that need a shorter 6 in cartridge; buyers should confirm housing dimensions before purchase.

Pros & Cons

Pros

• Direct compatibility with several common part numbers makes replacements quick and predictable.
• Longer 9 1/2 in length and 5 3/8 in diameter provide sufficient media area for effective filtration.
• Easy to install and remove thanks to the string handle and standard 1 1/2 in MPT thread.
• Cleaning is straightforward, which helps extend service life when maintained properly.

Cons

• Quality feedback is mixed among users, so performance can vary compared with some OEM filters.
• As an independent replacement, the listing clarifies that manufacturer names are used for compatibility only, which may concern buyers seeking an exact branded part.

Specifications

Our Verdict

The Chryseos 2 pack is a practical, cost-effective replacement for owners who need a 9 1/2 in cartridge that fits FC-2402 and similar part numbers. It delivers reliable fit and easy maintenance, making it a sensible choice for routine filter replacement, though buyers seeking exact OEM branding may prefer original manufacturer parts.

Frequently Asked Questions

Will this fit my hot tub if it lists FC-2402?
If your tub lists FC-2402 or one of the compatible numbers shown, the 9 1/2 in length and 1 1/2 in MPT thread make it likely to fit, but verify housing dimensions before purchase.

How should I clean these cartridges?
Rinse with a hose to remove debris and use an appropriate filter soak occasionally; regular cleaning helps extend filter lifespan.

Is this an OEM part from the original maker?
No, Chryseos is an independent brand and the manufacturer names are used only to indicate compatibility.