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PRB25SF-PAIR spa filter equivalents
Part number PRB25SF-PAIR appears in 2 cross-reference rows 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.
Beachcomber C-4405 cartridge (SKU 3005825), 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft. Unicel C-4405, Pleatco PRB25SF-PAIR.
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| OEM | 3005825 |
|---|---|
| Unicel | C-4405 |
| Pleatco | PRB25SF-PAIR |
| Filbur | FC-2387 |
| Size | 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft |
Sources
- Beachcomber Hot Tubs (manufacturer product page): SKU 3005825: 50 sq ft, two pieces, generally pre-1995 upfront weir; page says the medium doubles filtration capacity; no length printed (web page)
- Unicel 2026 Replacement Guide: Beachcomber OEM cross-reference, PDF p.29 (printed p.25): 3005825 = C-4405, 4-15/16" x 6-5/8", 50 sq ft, 4 oz; spec table PDF p.8 (printed p.4): 158 pleats, two per set with stick handle (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47; spec table PDF p.32 (5" x 6-5/8") (PDF)
- Filbur Catalog & Reference Guide: Beachcomber Spas, PDF p.15: FC-2387 = C-4405, 4-15/16" x 6-5/8", 2/set, 50 sq ft (PDF)
Not in sources: Beachcomber prints no length, and "doubles" does not match 35 sq ft to 50 sq ft; Pleatco outside diameter is 5".
Full details → · All Beachcomber spa filters · Which fitting you need · How to install it
Freedom Spas C-4405 cartridge, 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft. Unicel C-4405, Pleatco PRB25SF-PAIR.
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| OEM | |
|---|---|
| Unicel | C-4405 |
| Pleatco | PRB25SF-PAIR |
| Filbur | FC-2387 |
| Size | 4-15/16" (125 mm) × 6-5/8" (168 mm), 50 sq ft |
Sources
- Unicel 2026 Replacement Guide: Freedom Spas line, PDF p.35 (printed p.31): blank model cell, C-4405, 4-15/16" x 6-5/8", 50 sq ft, 4 oz, note "Model dated after 1993" under the row (PDF)
- Pleatco 2023 Catalog: Unicel cross-reference PDF p.47: C-4405 = PRB25SF-JH-PAIR (PDF)
- Filbur Catalog & Reference Guide: Freedom Spas section PDF p.18 (printed p.35): FC-2387, Rainbow DSF 50, 2/set, same 1993 note (PDF)
Not in sources: No model name. The 1993 note does not say it replaced Liberty's C-4401. Filbur calls it Rainbow DSF 50, not a Freedom model. Duplicate of the Beachcomber C-4405 body..
Full details → · All Freedom Spas spa filters · Which fitting you need · How to install it