Refresh spa and pool water with confidence using the Filbur Spa/Pool Replacement Filter Cartridge C-7633 (FC-2115). Designed for Purex CF-33/100 applications, this cartridge delivers dependable filtration that helps keep your water clear, clean, and inviting.
What makes this Filbur cartridge stand out
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33 sq ft filtration area provides ample surface area to trap dirt, oils, and debris, extending clean water periods between cleanings.
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Open top and bottom designs with a 7" diameter and 14" length offer straightforward alignment and replacement in Purex/Pentair bottom housings, reducing setup headaches.
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4 oz media tailored for the CF-33/100 family, delivering effective particulate capture while maintaining good flow through the cartridge.
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Exact footprint compatibility engineered to fit CF-33/66/100 systems, ensuring a snug, reliable fit within compatible spa and pool filtration setups.
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Specific fit for Purex/Pentair bottoms, so you can swap in quality Filbur filtration without hardware changes or guesswork.
Ideal use cases
Whether you’re replacing an older CF-33/66/100 cartridge or upgrading to a more reliable Filbur option, this C-7633 cartridge is well-suited for residential spas and smaller-to-mid-sized pools that rely on Purex CF-33/100 footprints. It’s a solid choice when you want consistent water clarity, easier maintenance, and a straightforward, tool-free replacement process.
Why choose this replacement over alternatives
Unlike generic replacements, the Filbur C-7633 is purpose-built for Purex CF-33/100 configurations with an Open TOP and Bottom design, aligning precisely with your existing housing. The 33 sq ft filtration area is a clear performance advantage for capturing fine particulates and oils, helping your circulation pump run efficiently and your sanitizer work more effectively.
Care and replacement guidance
For best results, inspect the cartridge regularly for signs of wear or clogging. When flow slows or water clarity declines, it’s time to replace with this C-7633 option. After rinsing lightly with a garden hose to remove loose debris, install the new cartridge firmly in place and run the system to confirm a steady, even flow.
Key specifications
- : C-7633 (FC-2115)
- : 33 sq ft
- : 4 oz
- : 7 inches
- : 14 inches
- : Open
- : Open
- : Purex CF-33/100; compatible with Purex/Pentair bottom assemblies; footprint matches CF-33/66/100 family
| Application |
Purex/Pentair |
| Bottom Physical Dimension |
2-15/16" |
| Bottom Style |
Open |
| Diameter |
7" |
| Length |
14" |
| Media Type |
4oz |
| Model |
CF-33/66/100 |
| Square Footage |
33 sq ft |
| Top Physical Dimension |
2-15/16" |
| Top Style |
Open |
