Havuzpas FC-2402 Hot Tub/ Spa Filter Cartridge 9-3/8" x 5-3/16" — Trilobal Pleated Media, 1-1/2" MPT

Havuzpas FC-2402 is a direct-fit replacement spa cartridge filter engineered to restore clear, healthy-feeling hot tub water for models that accept Watkins 303279, Unicel 5CH-37 and similar part numbers.

When your spa’s flow and clarity decline, a worn filter is often the cause. The Havuzpas FC-2402 provides the same length, diameter and threaded base orientation as common OEM cartridges so it installs quickly and delivers consistent particle capture. Built from a trilobal filtration fabric, this cartridge traps debris while allowing reliable circulation; it’s designed for easy rinsing and a service life of roughly one to two years under normal use.

Will this filter fit my hot tub model?

The FC-2402 matches the critical dimensions and connections used by several popular replacement part numbers. Always measure your existing cartridge before ordering to confirm fit.

• Length: 9-3/8"; Outside diameter: 5-3/16"
• Top: closed with string handle for simple removal
• Bottom: 1-1/2" MPT threaded base to mate with common housings
• Compatible references: Watkins 303279, Unicel 5CH-37, Filbur FC-2402 and more

How does the Havuzpas filter improve water clarity?

Its trilobal fabric structure increases surface area and captures a wider range of suspended solids compared with plain pleated media. This improves mechanical filtration and reduces strain on your circulation system.

• Layered pleats for enhanced dirt-holding capacity
• Fabric shape promotes efficient trapping of fine particles
• Maintains steady flow to help filtration and chemical distribution

What maintenance does this cartridge require?

Routine care keeps the cartridge performing at peak efficiency and extends service life. Cleaning is straightforward and requires only basic tools or a hose.

• Rinse with a strong garden hose every 2–4 weeks, depending on usage
• Soak in filter cleaner quarterly or when oils and scale build up
• Inspect for tears, compressed pleats or permanent staining before reinstalling

How long will the FC-2402 last in my spa?

Longevity depends on bather load, water chemistry and maintenance frequency. With correct care, this Havuzpas cartridge is built to remain effective for more than a year under normal conditions.

• Expected service life: 1–2 years with routine rinsing and periodic chemical cleaning
• Replace sooner if pleats are damaged or flow is noticeably reduced
• Proper water balance reduces mineral and organic fouling

Who is this for: The Havuzpas FC-2402 is aimed at spa and hot tub owners who need a reliable, cost-effective replacement for common OEM cartridges such as Watkins 303279 and Unicel 5CH-37. It’s ideal for DIY maintainers who want an easy-install cartridge with proven fit dimensions, for service technicians stocking compatible replacements, and for anyone looking to restore circulation and filtration performance without buying a proprietary-priced OEM part. Note: this is a compatible replacement; check part numbers and measurements against your existing filter before purchase.