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FLT-201TL spa filter equivalents
Part number FLT-201TL 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.
PDC Spas C-4326 cartridge (OEM FLT-201TL), 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft. Unicel C-4326, Pleatco PRB25-IN.
Unicel C-4326
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| OEM | FLT-201TL |
|---|---|
| Unicel | C-4326 |
| Pleatco | PRB25-IN |
| Filbur | FC-2375 |
| Size | 4-15/16" (125 mm) × 13-5/16" (338 mm), 25 sq ft |
Sources
- PDC Spas (manufacturer filter guide, 2025): Luxury, Premium, SE and LX, 1990–present: FLT-201TL, 25 sq ft, 5" × 13-5/16", 2-1/8" holes, Unicel C-4326 (PDF)
- Unicel 2026 Replacement Guide: PDC Spas block, PDF p.47 (printed p.43): C-4326, 4-15/16" × 13-5/16", 25 sq ft, 3 oz. Spec table PDF p.9 (printed p.5): 106 pleats, 2-1/8" open ends. C-4625 is the 4 oz cartridge of the same size. (PDF)
- Pleatco 2023 Catalog: Spec table PDF p.32: PRB25-IN, 5" × 13-5/16", 3 oz, 25 sq ft. Cross-reference PDF p.47: C-4326 = PRB25-IN. (PDF)
- Filbur Catalog & Reference Guide: Size table PDF p.9 (printed p.17): FC-2375 = C-4326. PDC section printed p.45: FC-2370 printed as C-4325. (PDF)
Not in sources: Diameter 5" (PDC, Pleatco) vs 4-15/16" (Unicel, Filbur). Filbur’s PDC section prints C-4325 on the FC-2370 row; its size table prints FC-2370 as C-4625 and FC-2375 as C-4326..
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