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90-802 spa filter equivalents
Part number 90-802 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.
Softub 6CH-25 cartridge (OEM 90-802), 6" (152 mm) × 5-1/2" (140 mm), 25 sq ft. Unicel 6CH-25, Pleatco PTL20W-SV-P4.
Unicel 6CH-25
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| OEM | 90-802 |
|---|---|
| Unicel | 6CH-25 |
| Pleatco | PTL20W-SV-P4 |
| Filbur | FC-0305 |
| Size | 6" (152 mm) × 5-1/2" (140 mm), 25 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Softub section), PDF p.55 (printed p.51); spec table PDF p.12 (printed p.8) (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47 (6CH-25 = PTL20W-SV-P4); spec table PDF p.33 (Softub; Leisure Bay; 6 x 5-1/2, OEM 90-802) (PDF)
- Filbur Catalog & Reference Guide: Product by Pool/Spa Manufacturer (OEM), Softsider Spas (continued), printed p.50 (PDF p.26): FC-0305, 6 x 5-1/2, handle, OEM 90-802, PTL20W-SV-P-4, 6CH-25, 25 sq ft (PDF)
Not in sources: sq ft rating differs between Unicel/Filbur (25) and Pleatco (20); Filbur files OEM 90-802 under Softsider Spas rather than Softub; no model-year fitment in sources.
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