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FC-2400 spa filter equivalents
Part number FC-2400 appears in 1 cross-reference row below. Each row lists the OEM, Unicel and Pleatco numbers that the source documents treat as interchangeable, plus the cartridge size so you can confirm against your old filter.
The same numbers, on one page, are in the cross-reference lookup. A schedule for this part number, and the buy link, are on the replacement schedule and reorder page. Published intervals by brand are in the replace and clean calculator.
Freeflow Spas 4CH-23 cartridge (closed top), 4-15/16" (125 mm) × 6-5/8" (168 mm), 25 sq ft. Unicel 4CH-23, Pleatco PFF25TC-P4.
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| OEM | |
|---|---|
| Unicel | 4CH-23 |
| Pleatco | PFF25TC-P4 |
| Filbur | FC-2400 |
| Size | 4-15/16" (125 mm) × 6-5/8" (168 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: Freeflow model list, PDF p.35 (printed p.31): CLX = 4CH-23; spec table PDF p.8 (printed p.4): closed top, 212 pleats, 3 oz, 25 sq ft, model cell CLX (PDF)
- Pleatco 2023 Catalog: Unicel cross-reference PDF p.47: 4CH-23 = PFF25TC-P4. Spec table PDF p.31 and application index PDF p.27: closed cartridge for TLX and RLX (PDF)
- Filbur Catalog & Reference Guide: Dimensional listing PDF p.9 and Freedom Spas section PDF p.18 (printed p.35): FC-2400 closed, TLX/RLX, FF-100, 4CH-23 (PDF)
Not in sources: Unicel model is CLX; Filbur and Pleatco models are TLX and RLX (plus Lagas, FF-100, Claro). Diameter 4-15/16" vs Pleatco 4-5/8". No Freeflow OEM number in Unicel. FF-100 is Filbur/Pleatco only..
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