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5CH-45 spa filter equivalents
Part number 5CH-45 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 5CH-45 cartridge (Legend), 5-5/16" (135 mm) × 10" (254 mm), 45 sq ft. Unicel 5CH-45, Pleatco PFF50P4.
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| OEM | |
|---|---|
| Unicel | 5CH-45 |
| Pleatco | PFF50P4 |
| Filbur | FC-2401 |
| Size | 5-5/16" (135 mm) × 10" (254 mm), 45 sq ft |
Sources
- Unicel 2026 Replacement Guide: Freeflow model list, PDF p.35 (printed p.31): Legend and Passport = 5CH-45, 45 sq ft; spec table PDF p.11 (printed p.7): 225 pleats, model cell Legend, 5-5/16" x 10", open 2-1/8" (PDF)
- Pleatco 2023 Catalog: Unicel cross-reference PDF p.47: 5CH-45 = PFF50P4. Spec table PDF p.32: 50 sq ft for Freeflow Spas Legend (PDF)
- Filbur Catalog & Reference Guide: Dimensional listing PDF p.10: FC-2401 at 5-5/16" x 10", 45 sq ft. Freedom Spas section PDF p.18 (printed p.35): Legend at 5-1/4" x 10" (PDF)
Not in sources: Area 45 sq ft (Unicel, Filbur) vs 50 sq ft (Pleatco). Filbur diameter 5-5/16" in the size table vs 5-1/4" in the Freedom section. Passport is Unicel's model list only. Pleatco number PFF50P4 on the cross-reference vs PFF50P in Filbur's cell..
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