Why it matters
The Sundance Spas 6540-501 Spa Filter Cartridge is a replacement spa and hot tub filter cartridge, with 75sq ft of media.
Match the part number on your old cartridge or filter housing first; if it has worn off, measure length, outside diameter and both center holes. A cartridge that is close but not exact can let dirty water bypass its seals.
Who it's for, and who should skip it
Good fit if
- Spas and hot tubs
- Owners with the original part number
Look elsewhere if
- Filters with a different part number
Pros and cons
Pros
- 75sq ft of media
Cons
- Check length and hole sizes against your old cartridge
- Third-party cartridges rely on the seller's fit statement
Limitations to weigh
- Specifications are the maker's or seller's own; check fit against your equipment's manual and part numbers.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | 6540-501 | Retailer |
|---|---|---|
| Filter area (maker) | 75 sq ft | Retailer |
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Final verdict
A sensible spa cartridge for spas and hot tubs.
Where to buy
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