HANXER Hot Tub Filter Cartridge 6540-502 Replacement 2-Pack — Fits Filbur FC-2812, Dense Pleated Polymer for Clear Spa Water

HANXER 6540-502 is a two-pack disposable hot tub and spa filter cartridge engineered to replace Filbur FC-2812 and several Sundance and PPS models, restoring clear water with efficient particle removal.

When your spa or pool filter needs a straightforward swap, the HANXER 6540-502 offers a ready-fit replacement designed to match common OEM dimensions and performance. These disposable cartridges are built from a dense woven polymer that increases surface area for capturing debris like sediment, skin oils, and hair. They fit a range of compatible models and are offered as a convenient twin pack so you can replace filters on schedule without waiting for shipments.

Will this filter fit my hot tub or spa model?

These HANXER cartridges are sized and shaped to be compatible with Filbur FC-2812 and specific Sundance and PPS models, functioning as direct replacements. Confirming the measurements of your existing cartridge ensures a proper seal and optimal flow.

• Compatible model names: 6540-502, Filbur FC-2812, Sundance Series 850 and 780, PPS750.
• Dimensions: total length 5 inches, outside diameter 7 3/4 inches.
• Top and bottom open diameter: 4 7/8 inches — check your current cartridge to match.

How does this cartridge clean my spa water effectively?

HANXER cartridges use a dense woven polymer media that creates a large surface area for trapping particles while allowing water to flow freely. The structure captures visible debris and finer sediments to help maintain clear water between full system cleanings.

• High-efficiency pleated polymer media traps sediment, hair, and particulate matter.
• Designed to balance filtration efficiency with flow to avoid overstraining pumps.
• Disposable design: swap with a fresh cartridge for consistent performance.

How often should I replace these disposable filters?

Replacement frequency depends on spa usage, bather load, and water chemistry; many owners replace disposable cartridges monthly under moderate use. Regular replacement prevents clogging, preserves flow, and reduces stress on circulation equipment.

• Typical replacement interval: every 4–8 weeks for moderate use; more often with heavy use.
• Replace sooner if you notice reduced flow, cloudy water, or visible buildup on the media.
• Do not attempt to clean with cartridge cleaners—these are intended as disposable filters.

What should I expect when installing and maintaining this filter?

Installing the HANXER 6540-502 is straightforward: remove the old cartridge, compare dimensions, and insert the new unit ensuring a snug fit. Because these are disposable, maintenance is limited to inspection and routine replacement rather than deep cleaning.

• Installation: remove access panel, lift out old cartridge, place new cartridge ensuring correct orientation.
• Maintenance: inspect monthly for clogging, tears, or deformation; replace when performance drops.
• Warning: do not use chemical cartridge cleaners on this disposable filter to avoid damaging the media.

Who is this for: The HANXER 6540-502 two-pack is a practical choice for spa and hot tub owners who need a reliable, ready-fit replacement for Filbur FC-2812 and compatible Sundance or PPS models. It's aimed at people who prefer the simplicity of disposable filters over reusable cartridges, want to maintain clear water with minimal fuss, and need parts that match OEM dimensions for an easy swap.